# How do you factor y=4x^2+12x+9 ?

Feb 6, 2016

${\left(2 x + 3\right)}^{2}$

#### Explanation:

A special case of the quadratic polynoms is

${\left(a + b\right)}^{2} = {a}^{2} + 2 a b + {b}^{2}$

We can see that a=2x and b=3

Therefore the factorization is:

${\left(2 x + 3\right)}^{2}$