Question

How do you factor `3a+3b+ab+b ^2`?

Answer 1

See below.

Explanation:

Starting with `3a+3b+ab+b^2`
We can factor out the `3`'s and `b`'s like so:
`3(a+b)+b(a+b)`
Then finally we can factor by `(a+b)`:
`(3+b)(a+b)`