What topic is this and can someone help me solve it

[jaunty lichen]

I have no clue how to answer this question

<@&791435371564892232>

[tranquil wedge]

quadratics

you can use completing the square to find a quadratic's turning point

[jaunty lichen]

so where would u start

if u see this question how would u start solving it

@tranquil wedge

[urban belfry]

complete the square

[jaunty lichen]

how?

[urban belfry]

you dont know how to complete the square?

yh its over

💀

wait ill send a video

[jaunty lichen]

its not

[urban belfry]

how do u not know hwo to complete the square

has ur teacher never taught this?

[tranquil wedge]

isnt ur exam in 10 days or smth

[urban belfry]

^^

11*

same thing

[jaunty lichen]

i did not decide to listen

[tranquil wedge]

11 days and you dk how to complete the square

[urban belfry]

that was smart

[jaunty lichen]

i do fm as well btw

[tranquil wedge]

might be cooked lil bro

[jaunty lichen]

never

[urban belfry]

oh then differentiate it

[jaunty lichen]

so can u guys explain

[jaunty lichen]

yeah so u think i can do that

[tranquil wedge]

could differentiate yes

[urban belfry]

yeah sorry i was dreaming

[tranquil wedge]

although im not sure if it would be accepted

[urban belfry]

i did and my teacher siad its fine

as long as it doesnt say

[jaunty lichen]

it wont be counted

[urban belfry]

by completign the square

[tranquil wedge]

ah i see

[jaunty lichen]

so how do i complete the square for this question?

[urban belfry]

factor out 2

[tranquil wedge]

do it how u normally would

start by factoring out a 2

[jaunty lichen]

wdym factor out 2 bro

can u guys write it

[tranquil wedge]

2(x^2 - kx/2) + k

[tranquil wedge]

bro 💀

[silent shell]

Hi

[jaunty lichen]

ok yeah then what next?

[urban belfry]

2[x^2 - kx/2] + k
2[(x-k/4)^4 - k^2/16) + k =
2(x-k/4)+k-k^2/8

done it for u icl

[tranquil wedge]

2(x - kx/4)^2

[jaunty lichen]

you guys are writing different answers

[mossy ember]

um

[silent shell]

check ms

[urban belfry]

wrd i probably wrote it wrong

[jaunty lichen]

so first

2(x^2-kx/2)

[urban belfry]

man i wread it as 2k^2

and put k instead of x

:(

[silent shell]

Even i dont get how to do it can u restart

[jaunty lichen]

bro u aint funny

[silent shell]

m not trynna be

[tranquil wedge]

if you want to use calculus,
dy/dx = 4x - k
4x - k = 0
x = k/4
sub into y
y = 2 * k^2/16 - k^2/4 + k
y = k^2/8 - k^2/4 + k
y = k - k^2/8
therefore t.p : (k/4 , k - k^2/8)

[silent shell]

TF why calculas cant we use completing the sqaure or smthng

[jaunty lichen]

ima look at mark scheme again and see if i understand

[tranquil wedge]

because calculus is fun

[urban belfry]

wrd

use a level maths in the gcse paper

🔥

[tranquil wedge]

well as level

but still

🔥

[silent shell]

nahh

[urban belfry]

https://www.youtube.com/watch?v=VS6apvTv2Rc

[urban belfry]

same thing!!

watch this

[jaunty lichen]

yo guys for completing the square, do you have to always factor out first number

[urban belfry]

yes

but when its 1 nothing happens

[tranquil wedge]

very wrongen

[urban belfry]

wrd

[jaunty lichen]

alr thanks

[urban belfry]

im the wrongen

watch the vid i sent

[silent shell]

Ik how to complete the square but isnt that only for minimum point

[urban belfry]

and max

max will js be

[tranquil wedge]

not just for turning points

[urban belfry]

-a(x^2 + b) + c

[silent shell]

opposite of opposite

[urban belfry]

i dont know anymore

[silent shell]

oh so just dont complete it completly

[tranquil wedge]

icl i dont remember the last time i completed the square

[urban belfry]

i dont complete the square after i learnt calculus

[jaunty lichen]

im looking at ms i dont get how it goes from kx/2 to kx/4

[silent shell]

where do i learn it

[urban belfry]

as levels

🔥

[tranquil wedge]

you gotta half it

because ur turning it into 'squared' form

[urban belfry]

yeah

[silent shell]

so how do i pass gcses 😭

[urban belfry]

idk bro

[tranquil wedge]

by not failing

ur welcome

[silent shell]

nah

anyways anyone down to help me with circle theroums

[tranquil wedge]

doing gcses in 2024 is crazy tho icl

[urban belfry]

fr

im gonna raise the maths grade boundries

[tranquil wedge]

2022 is the last valid year

🔥

[jaunty lichen]

watch video, i learned all in 20mins when i knew nothing

[urban belfry]

https://www.youtube.com/watch?v=3qwP-zMfCDw

this seems

reasonable

idk i never struggled with learning maths

[mossy ember]

do u still not get it i can send some workin out

[tranquil wedge]

i think you need to know how to prove them too

[silent shell]

W

[urban belfry]

yeah

theres 5

that u need to know how to prove

out of the 8

[jaunty lichen]

yeah if u could

[silent shell]

I have memorized all 8

[jaunty lichen]

i think ima need to watch a completing square vid

[urban belfry]

wrd

[silent shell]

but idk what to do in questions

[urban belfry]

@jaunty lichen

[tranquil wedge]

use the proof init

[silent shell]

i cant apply them

[jaunty lichen]

thanks

[tranquil wedge]

thats the problem with memorising

[urban belfry]

use the proof is craz

[tranquil wedge]

mb bro

should have thought of something else to use

[urban belfry]

i mean it makes sense

but

[mossy ember]

do yk the formula for completing the square? if yk that then my steps should make sense

[urban belfry]

thats to much writing

the formula for completing the square is like

[jaunty lichen]

ima watch vid rn ill come and see it in a bit but thanks

[silent shell]

Btw i got my first 9 today In 2019 1h 2h but 3 marks away from 8 in the R papers

m doing R is that a bad sign

[mossy ember]

ALR

[urban belfry]

a(x- b/2a)^2 - (b/2a)^2 + c (this is probably wrong)

yeah the formula for completing the sqaure can be equated to 0

[silent shell]

what kind of completing hthe sqaure in gods heavenly earth is this

[urban belfry]

and rearanged to get the quadratic formula

[urban belfry]

general completing the square formula

[silent shell]

isnt that a(x+b)+c

[urban belfry]

its probably wrong im cooked rn

[urban belfry]

thast the form

not the formula

wrd

[silent shell]

m cooked

[tranquil wedge]

no

[mossy ember]

well i think its much simpler to

1. factor out the x^2 coefficient in ax^2+bx+c
2. apply this formula

just like i did above

in the other pic

[tranquil wedge]

or just learn the steps fr

[urban belfry]

i got is correct!!

u forgot the a

but yeah!!!

[silent shell]

So helping me with circle thermoes now

like applying them

[urban belfry]

i cant really

help you apply them

[tranquil wedge]

watch the video init

[urban belfry]

yeah

[urban belfry]

@silent shell

[silent shell]

I have watchted it more than 7 times in the past month

[tranquil wedge]

watch it 7 more times

[urban belfry]

💀

[silent shell]

makes sense

[urban belfry]

you just need to analyse the shape carefully

[tranquil wedge]

there's also dr frost videos u can use

[urban belfry]

idk what otgher advice i can give tbh

[tranquil wedge]

i struggled with this topic a lot when i first started it

[silent shell]

makes sense

[tranquil wedge]

dr frost the goat helped make it easier

[urban belfry]

wrd

[mossy ember]

i still dont kkow like 60% of gcse content

never learnt it

[urban belfry]

dfm carried me to grade 9

[urban belfry]

how

[tranquil wedge]

yk who carried me to grade 9

[urban belfry]

urself

🔥

[tranquil wedge]

🔥

[mossy ember]

idek i got so lucky with the 2023 papers they were 37737474 easier than all my mocks😭

[silent shell]

How to do this

[tranquil wedge]

i was such a sweat bro

i must have done about 60 papers

[urban belfry]

send the full question

[tranquil wedge]

including fm

[mossy ember]

damn

[urban belfry]

ive done less than 30

[silent shell]

I just did

[urban belfry]

in my entire life

🔥

[mossy ember]

all time fr

😭

[silent shell]

ill open the pdf

[tranquil wedge]

i did so many cos i was tryna get full marks

[urban belfry]

maths is js to easy

[tranquil wedge]

but it never happened 😔

[urban belfry]

free up bro

[tranquil wedge]

so close, yet so far

[urban belfry]

always the silly mistakes

catching me lacking

[tranquil wedge]

cold question

[silent shell]

i can do it if they gave the proabality in a ratio form

[urban belfry]

p(red) = 4 / x+ 4
p(yellow) = x (x+4)
p(YY) =
x / x+4 * x / x + 3

[tranquil wedge]

let total marbles be x

so that yellow is x -4

[urban belfry]

hahaha im faster!1

[tranquil wedge]

damn

[urban belfry]

anyways

[tranquil wedge]

i used to do a whole tree diagram for those qs

[urban belfry]

tree diagrams for noobs

js run it in yo head!!

[tranquil wedge]

i was a noob

[urban belfry]

dam

[silent shell]

I know how to start the question

[urban belfry]

mustve been hard

[tranquil wedge]

but now i'm him

[urban belfry]

x^2 / x^2 + 7x + 12 = 7/10

[jaunty lichen]

This brudda is cooked

[silent shell]

/\

[silent shell]

then corss multiply

TF can u maybe write it down and send it this makes no sense

[tranquil wedge]

how do i solve the equation x = x

[urban belfry]

let me do the math

im doing this all in my head

[silent shell]

alr

[jaunty lichen]

yeah i understand most of it i just dont understand last step

[urban belfry]

bun this

im using quadratic formula

[jaunty lichen]

how did u pick out the turning point from that

[mossy ember]

last line or 2nd last?

[urban belfry]

gg i fucked it

[jaunty lichen]

both

[tranquil wedge]

-b/a is the x coordinate of the t.p i believe

[jaunty lichen]

i know how to get to the 2nd line

but after that

[tranquil wedge]

idk why they dont put basic differentiation in gcse

[urban belfry]

10x^2 - 10x = 7x^2 + 49x + 84

[tranquil wedge]

would make these questions way easier

[urban belfry]

real

[silent shell]

we do have basic diffrentiation

[tranquil wedge]

instead u gotta use some bot method like cts

[urban belfry]

u do IGCSE no?

[silent shell]

i have a past paper question of it

u want it

[tranquil wedge]

yeah bc you do igcse

[silent shell]

oh

[tranquil wedge]

its not in the normal gcse

[silent shell]

anwyas can we change the topic back to my question

[urban belfry]

yeah im solving

[mossy ember]

just remember that x coordinate of turning point is inside the bracket and the y coordinate is the part outside the bracket

[urban belfry]

x = 21

so total marbles = 25

ill send solution

[jaunty lichen]

Icl just watch a complete the square vid it takes 2m😂😂

[urban belfry]

gimme 2 seconds

[jaunty lichen]

i did

[jaunty lichen]

So do u get it

[jaunty lichen]

no

Fuck me

[silent shell]

aight

[jaunty lichen]

how does it even go from negative to positive

[silent shell]

gender

[urban belfry]

whatever is inside the bracket you :
flip the sign (if its positive it becomes negative and vice versa)
this is ur x value

your y value is whatever is outside the bracket

[jaunty lichen]

😂

[mossy ember]

@jaunty lichen

[jaunty lichen]

alright thanks

[urban belfry]

cuz x + a = 0
so x = - a

a is whatever u have

in the brackets

[jaunty lichen]

what

[urban belfry]

dont mind it

[mossy ember]

LMAOOAO

[urban belfry]

follow my steps

[urban belfry]

did i do sum wrong

again

[jaunty lichen]

yeah i think i understand it

[urban belfry]

?

[jaunty lichen]

does anyone got a question like this i could try

[silent shell]

x+a=0 so u move a and moving it other sides flips the sign

[jaunty lichen]

and see if i can do it

[silent shell]

so if u move a to get x a will flip sign so it will become x=-a

[urban belfry]

https://www.mathsgenie.co.uk/resources/9-completing-the-square.pdf

CTS IS GRADE 9??

YO?

[mossy ember]

no it makes sense

[mossy ember]

WHAAAAT

[urban belfry]

oh ok

[silent shell]

whats cts

[urban belfry]

bro i never knew this

[urban belfry]

completing the square

[jaunty lichen]

yes completing the square a very hard topic

[urban belfry]

no it isnt

[silent shell]

no way

[jaunty lichen]

ok ima go try them

[silent shell]

its the easiest

watch the save my exams video on it its easier

[urban belfry]

i pulled the first

vid i could find

i dont use maths videos

[silent shell]

or if u have the casion 991ex trhere is a function for it u just need to manuplait it for the workings

[mossy ember]

trust me once u practice it just a LITTLE BIT it'll become natural to u it'll b the easiest thing ever

its basically the same thing everytime

[urban belfry]

for gcse maths

[silent shell]

how do u study then

[urban belfry]

i dont

[silent shell]

oh yea u told that yesterday

[urban belfry]

yeah

[jaunty lichen]

ima try complete this now https://www.mathsgenie.co.uk/resources/9-completing-the-square.pdf thank you all for helping me

actually explained it well

[silent shell]

any progress so far

[urban belfry]

do u want the markscheme and np

[mossy ember]

ALRR GL

[jaunty lichen]

yeah send it if u could but i can find it anyways

[urban belfry]

https://www.mathsgenie.co.uk/resources/9-completing-the-squareans.pdf

@silent shell

im doing ur question

[silent shell]

yea

[jaunty lichen]

thanks

[urban belfry]

gimme 3 mins

[silent shell]

aight

[mossy ember]

the number of replies is crazy

[silent shell]

m go grab a snack till then

[urban belfry]

real

@silent shell

here u go

[silent shell]

where did this spwan from,

[urban belfry]

multiply

[silent shell]

what

[jaunty lichen]

bro no way i was strugging with this like 20 mins ago and now im good at it

[silent shell]

ohk

i htought it litreally quals to that

[urban belfry]

nice

[silent shell]

u opened the brackets

[urban belfry]

yh

😭

[silent shell]

what about thos

thos

[urban belfry]

factorising

[silent shell]

alr

and this part \

[urban belfry]

im moving the quadratic to the other side

[silent shell]

why is it randomly under brackets

oh alr

[urban belfry]

so one side equals 0

sorry thats how i re arrange lol

[silent shell]

ahh

makes sense

i didnt get what this means but i found out how to find the answer

thats good enoguh'

[urban belfry]

thats -59x

[silent shell]

that looks like a sq to be honest

[urban belfry]

mb

L handwriting ong

[silent shell]

mine is worse

plus handwriting doesnt matter the quality of ur answer does

[urban belfry]

reel

js hope the examiner can understand it

[silent shell]

fr

how are uk inviligatros are school told us we are gonna get invigilators from uk

are they chill

[urban belfry]

ig

i mean it depends tbh cuz everyone is different

[silent shell]

am i gonna be pat down full body

[urban belfry]

mine didnt

[silent shell]

yea ig it depends on how much they follow the rules

[silent shell]

ur done by exams

how do u still have the Y11 tag

[urban belfry]

i havent

im gonna sit mine

in my mocks

they didnt

[silent shell]

they dont anyone in mocks cause thosse are ur school teachers not peoplle sent by the exam board

[silent shell]

whens the first exam for u

[urban belfry]

9th

[silent shell]

shouldnt u be paniking

[urban belfry]

nah

[silent shell]

teach me how to be like u

[urban belfry]

idk

[silent shell]

Yo imaa come back in a few hours and I got a metric ton of doubts be ready

[urban belfry]

xD

[jaunty lichen]

check dms

[abstract current]

my wording for turning point questions always feels wierd

like do i j say, the turning point is when (x - k/4)^2 = 0

like i did therer

[tranquil wedge]

yh that's fine

[urban belfry]

looks good

[tranquil wedge]

u could just write the coordinates and youd get the marks

[abstract current]

calm thanks

[abstract current]

yh ig

that doesnt rlly explain why tho right

[urban belfry]

u dont need to explain

fr

[abstract current]

if i j write down coords

[tranquil wedge]

it does say to show

so if u just write it down after showing ur work

[urban belfry]

if i write the numbers i am showing

[tranquil wedge]

you'd have shown it

its only gcse so ntd

[charred pollen]

412 messages

crazy

[hazy ridge]

this is completing the square

[charred pollen]

on a gcse completing the square q

[hazy ridge]

cant lie i was gonna use differentiation

[urban belfry]

after 400 messaged you think we still on the question

[urban belfry]

yeah im gonna do that in the exam

[abstract current]

lmao

[urban belfry]

🔥

[hazy ridge]

lets gooo homie

[urban belfry]

the examiner aint ready for as level maths

[hazy ridge]

they are gonna be shocked

[urban belfry]

wrd

watchme not get marks for differentiating

💀

unless the question asks for CTS

[hazy ridge]

you can actually

[urban belfry]

im gonna use it

[tranquil wedge]

i said the same thing but i prolly got too shook to do it

thinking i might lose marks for tryna be too cold

[urban belfry]

fr

[hazy ridge]

its good to be cold

[flat pebble]

Do u not need to complete square for inverse trig integration sometimes

[tranquil wedge]

oh yh

i do it but i dont realise its completing the square

its like breathing