maths GCSEs

[queen portal]

you’ll have to use your quadratic formula to find the intercepts

to find your turning point

use the formula

-b/2a to get x

here it will be - -8/2(2)

equalling 2

substitute that back into your original formula to find the y coordinate

[echo sedge]

idt that formulas gcse

ur probably meant to use completing the square

to get ur roots and the turning point

[queen portal]

completing the square doesn’t give you your roots

[echo sedge]

it does??

[queen portal]

also this is easily implementable in gcse

[queen portal]

that may have been dumb

sorry about that one

[echo sedge]

lmao nws

[queen portal]

but the formula is taught

[echo sedge]

i swr some things if its not in spec u dont get credit for tho

[queen portal]

i can do completing the square

too

[echo sedge]

unless you go step by step through it

[queen portal]

let me double check

[echo sedge]

like you cant j pull the formula out of nowhere

we def didnt learn it

we j did completing the square

[rancid bramble]

Ah ok cheers, I know this sounds a bit weird but what topic of maths is this?

[queen portal]

quadratics

but let me double check

if i have to teach it using complete the square

don’t go yet

[rancid bramble]

I won’t dw

[dusty mica]

Quadratic formula , Completing the square

[queen portal]

sorry about the big ass face

try to ignore it

[rancid bramble]

😂 nws

Ah ok

[dusty mica]

did bro get a lil bored 😭

[rancid bramble]

Why can’t you use the ac method for this?

[queen portal]

ignore the >3< btw

that’s not part of the question

[queen portal]

because

the quadratic doesn’t fsctorise

[dusty mica]

2* 5 = 10
no factors of 10 add to 8

[queen portal]

yes

[rancid bramble]

Ah ok I see that makes a lot more sense

Thank you!

[rancid bramble]

What’s this method callled?

[dusty mica]

derive the quadratic formula

[dusty mica]

completing the square

[rancid bramble]

Rlly

[dusty mica]

yes

really

[rancid bramble]

Really really

[queen portal]

yes

[dusty mica]

why doubt >:(

[queen portal]

@echo sedge double check with your teacher about the formula i just said but i don’t think you have to complete the square unless it says

[echo sedge]

you need the roots of x asw right?

[dusty mica]

yes

[queen portal]

but you use quadratic formula for that

[dusty mica]

yes

[echo sedge]

unless i fucked up the roots are kinda wierd

[dusty mica]

some zzz method

dy/dx better

🔥

[echo sedge]

its completing the square

thats j how we learnt it

[dusty mica]

yh ik

but CTS is so long

i hate it

[queen portal]

what

[dusty mica]

yes

[queen portal]

there’s differentiation in GCSE

[dusty mica]

no

i do further maths

[queen portal]

oh phew was wondering what i hadn’t done

[echo sedge]

i mean u need completing the square for the turning point anyway

wait nvm u used the formula to find the turning point

we def didnt learn it

[dusty mica]

u did it wrong 🔥

[echo sedge]

yh i see where

2 isnt the same as 4 / root 2

[dusty mica]

wrd