Question

How do you factor completely `15a^2y-30ay`?

Answer 1

`15a^2y-30ay = 15ay(a-2)`

Explanation:

Both of the terms are divisible by `15`, `a` and `y`, so by `15ay`.

So we find:

`15a^2y-30ay = 15ay*a - 15ay*2 = 15ay(a-2)`