Question

What is the standard form of `y= (25x + 1)(x - 1)`?

Answer 1

`25x^2 - 24x - 1`

Explanation:

to obtain the standard form multiply out brackets :

25x(x - 1 ) + 1(x - 1 ) = `25x^2 - 25x + x - 1`

collect like terms to obtain : `25x^2 - 24x - 1`