another geometric sequence

[tawdry hornet]

I don't get how I do these type of questions.

@lusty iron sorry for ping

[lusty iron]

well so

you remeber what a geometric sequence is right

[tawdry hornet]

Yup

[lusty iron]

to get from one term to the next

you just multiply by the same number

[tawdry hornet]

Yh

[lusty iron]

so from 4 to x, you multiply 4 by something

and then if you multiply by that thing again

you get 36

right?

[tawdry hornet]

Yh

[lusty iron]

aka

what number can you multiply by 4 twice

to get to 36

[tawdry hornet]

Ohhhh

12

[lusty iron]

yep!

(or -12 but it probably wants 12)

[tawdry hornet]

Ok let me try a similar question

[lusty iron]

ok so

i think you said the very first time i asked you about geometric sequences

you said smth about

2nd term / 1st term

[tawdry hornet]

Yh

[lusty iron]

and 3rd term / 2nd term

what about those do you know

[tawdry hornet]

I can only do basic

When X is involved I don't understand

[lusty iron]

yeah thats fine

[tawdry hornet]

Wdym

[lusty iron]

but can you remind me what about the

2nd term / 1st term

and 3rd term / 2nd term

whats important about those ratios

[tawdry hornet]

They are same

[lusty iron]

ok so

in this sequence you have here

what is 2nd term / 1st term

[tawdry hornet]

X/4

[lusty iron]

ok what about 3rd term / 2nd

[tawdry hornet]

2+12/x

[lusty iron]

ok awesome

and what did you say about those ratios

and so what should you do

[tawdry hornet]

Idk 😭

[lusty iron]

well you said they should be the same

aka they should be equal

[tawdry hornet]

Yh but don't know how

To

[lusty iron]

put an equals sign in between

x/4 = (2x+12)/x

[tawdry hornet]

It can't be 2x

Nvm

Do t mind me

I am dumb

X^2 = 8x+48

[lusty iron]

yep

[tawdry hornet]

What do I do after

[lusty iron]

solve

its a quadratic

do you remmeber how to solve quadratics

[tawdry hornet]

Oh ok

Is it 12

Or -4

[lusty iron]

12 seems good

so does -4

yeah i agree with both

gj 😄

if you wanna check, you can plug both in

if you plug 12 in you get 4, 12, 36

(which is in fact the same sequence you had question before)

and if you plug in -4, you get 4, -4, 4

both are geometric so both work

[tawdry hornet]

Do u know any websitea

[lusty iron]

errr

you can try mathsgenie

[tawdry hornet]

Where I can get these type oquestions

Nah they don't have it

[lusty iron]

you can try corbett maths, mathed up,

examsolutions

physics and maths tutor

you can also just try googling 'geometric sequence questions'

[tawdry hornet]

Letsssss go

Improvement

[lusty iron]

🥳 lets goooooo

[tawdry hornet]

Thx a lot

Btw

[lusty iron]

no worries 😄

[tawdry hornet]

U are my saviour

[lusty iron]

lol thanks

its no problem tho you did the hard work

[tawdry hornet]

Nah u deserve the credit

[lusty iron]

ill take some credit not all

[tawdry hornet]

Hmm good enough

[lusty iron]

i didnt even help you on that question and you aced it

[tawdry hornet]

U thought it to me bro

No ytb video helps when it is really specific

[lusty iron]

lets just agree we both kinda bossed it

[tawdry hornet]

Well we gonna keep doing this for the next month and the next years

[brittle pendant]

where ru getting all these geometric sequence practice questions, i want to practice these