Question

Which shows the equation below written in the form ax2 + bx + c = 0?

x + 9 = 4(x-1)^2
LOOK AT THE PICTURE REALLY EASY

Answer 1

D

Explanation:

We have the equation:

`x+9=4(x-1)^2`

To convert this to standard form, we can simply expand.

First, expand the right-hand side:

`x+9=4(x^2-2x+1)`

Distribute the right:

`x+9=4x^2-8x+4`

Subtract 9 from both sides:

`x=4x^2-8x-5`

Finally, subtract an x from both sides:

`0=4x^2-9x-5`

Flip:

`4x^2-9x-5=0`

Hence, our answer is D.