which of the following is a perfect square trinomial? A.x² - 2x + 4
B.4x² + 12x + 9
C.x² - 4y + 2y²
D.9x² - 6xy - y²
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which of the following is a perfect square trinomial? A.x² - 2x + 4
B.4x² + 12x + 9
C.x² - 4y + 2y²
D.9x² - 6xy - y²
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A. =x2−2x+4
B. (2x+3)(2x+3)
C. cannot factor
D. cannot factor
so the answer is B. (2x+3)(2x+3)