Quadratic

[flat hazel]

You can find completed square form from turning point

Kinda

[sullen relic]

a(x-5)^2-3

[flat hazel]

Then use the other point to find the coefficient of x^2

Yes

[sullen relic]

wdym

[flat hazel]

a will be the coefficient of x^2

[sullen relic]

how do I use the other point to find a

[flat hazel]

So y = a(x-5)^2 - 3

We know y = 0 when x=4

So sub those in

Find a

[sullen relic]

ohh ok

a = 3

[flat hazel]

Yea

[sullen relic]

how do i find the full equation reverse completing the square?

[flat hazel]

You just did it

[sullen relic]

i need it in terms of ax^2 + bx + c

[flat hazel]

Expand it

[sullen relic]

oh wait i can just expand 3(x-5)^2-3 right?

yh thx