Question

What is the standard form of `y= (-2x-9)(x+5)(-x+12)`?

Answer 1

`color(blue)(y = 2x^3 -5x^2 - 63x - 540`

Explanation:

`y = -(2x +9) (x+5) (-x+12)`

`y = -(2x^2 + 9x + 10x + 45) (-x+12)`

`y = -(-2x^3 - 19x^2 -45x + 24x^2 + 108x + 540)`

`color(blue)(y = 2x^3 -5x^2 - 63x - 540`