Answer: Rewrite 4x squared as (2x) squared
(2x) squared +12x + 9
rewrite 9 as (3) squared
Check the middle term by multiplying
2ab and compare this result with the middle term in the original expression.
2ab = 2 x (2x) x 3
Simplify 2ab = 12x, then factor using the perfect square trinomial rule. A sqaured + 2ab + b squared = (a + b) squared
A = 2x and B = 3
So your answer is
(2x + 3) squared!
sorry its so long
