Question

How do you factor: `3x^3 - 9x^2`?

Answer 1

`3x^2(x-3)`

Explanation:

When factorising, take out ALL of the common factors

ie `3 times x times x times x - 9 times x times x`

you notice that the common factors are 3 and 2 "x"
so you can factorise it to:
`3x^2(x-3)`