Question

factor x^3-9x

Answer 1

One common factor that i find here is x.

Answer 2

also x^2-9 = 0
=> x = +- 3

Answer 3

First factor out the GCF, x
x^3 - 9x
x(x^2 - 9)
THis is now a difference in squares pattern. Find the square root of 9 and put it in the blanks.
x(x + _)(x - _)

Answer 4

3