Question

What is the standard form of `y= (x+4)(2x-2)-(5x-2)^2`?

Answer 1

`y= -23x^2+26x-12`

Explanation:

`y=(x+4)(2x-2)-(5x-2)^2`
`y=x(2x-2)+4(2x-2)-[(5x-2)(5x-2)]`
`y=2x^2-2x+8x-8-[5x(5x-2)-2(5x-2)]`
`y=2x^2-2x+8x-8-[25x^2-20x+4]`
`y=2x^2-2x+8x-8-25x^2+20x-4`
`y=-23x^2+26x-12`
Hope this helps!