Question

factor out the largest possible common factor (the gcf) of 5x^2+15x

Answer 1

Let's say you have 2 + 4. You can also write that as 2 * (1 + 2)

Distributivity is basically a rule of the game. a * (b + c) = ab + ac. You're trying to work in reverse in your problem.

Answer 2

5x(x+3)
x(5x+15)
5(x+3/2)^2 -45/4

Answer 3

=5x(x+3)

Answer 4

is that right

Answer 5

Yes