Question

How do you factor `9v ^ { 2} + 12vf + 4f ^ { 2}`?

Answer 1

`9v^2+12vf+4f^2=(3v)^2+2*3v*2f+(2f)^2=(3v+2f)^2`

Explanation:

I used `a^2+2ab+b^2=(a+b)^2` identity.