Question

factor x^3 - 3x^2 - 9x

Answer 1

complete the square?

Answer 2

x(x^2 - 3x - 9)

Answer 3

I'd use the quadratic formula I gather
since the factors of 9, don't quite nicely give a -3

Answer 4

since f(-2) is likely more simple, then perhaps prof would accept that, we're using this to sketch a graph with all calc principles