Determine whether 4x2 + 6x + 9 is a perfect square. if so, factor it. if not, explain why. a. no, 4x2 + 6x + 9 is not a perfect square. 4x2 and 9 are perfect squares, but 6x is not equal to 2(2x)(3). so 4x2 + 6x + 9 is not a perfect square. b. yes, 4x2 + 6x + 9 is a perfect square. (2x + 3)2 c. yes, 4x2 + 6x + 9 is a perfect square. (2x − 3)2 d. no, 4x2 + 6x + 9 is not a perfect square. 4x2 and 9 are perfect squares, but 6x is not a perfect square. so 4x2 + 6x + 9 is not a perfect square.