Question

What is the standard form of `y= (x + 10)(x – 4)`?

Answer 1

`x^2 + 6x - 40`

Explanation:

to obtain the standard form multiply the brackets out

x(x - 4 ) + 10 (x - 4 )

`= x^2 - 4x + 10x - 40`

`= x^2 + 6x - 40`