Question

How do you write `(x-3)(x+2)(x+5)` in standard form?

Answer 1

Think distributivity (aka rainbow method)

Explanation:

`(x-3)(x+2)(x+5)`
`=(x^2+2x-3x-6)(x+5)`
`=(x^2-x-6)(x+5)`
`=x^3+5x^2-x^2-5x-6x-30`
`=x^3+4x^2-11x-30`