Question

How do you factor `18b^3-36b^2-9`?

Answer 1

`color(blue)(=> 9 * (2b^3 - 4b^2 - 1)`

Explanation:

`18b^3 - 36b^2 - 9`

`=> 9 * 2 * b^3 - 9 * 2 * 2 * b^2 - 9`

`=> 9 * (2b^3 - 4b^2 - 1)`