Question

Identify the factors of 4x2 + 12x + 9.

(4x − 3)(x − 3)
(4x + 3)(x + 3)
(2x − 3)(2x − 3)
(2x + 3)(2x + 3)

Answer 1

The answer is (2x + 3) (2x + 3) or 2x + 3^2

Simplifying the values turns 4 into 2, and 9 into 3.

Answer 2

(2x+3)(2x+3) is the answer. Multiply contents of brackets on each other so, 4x+6x+6x+9=4x^2+12x+9