Factor using the ac-method.4x4 + 12x2 + 9
A. (2x2 - 3)(2x2 - 3)
B. (2x2 + 1)(2x2 + 9)
C. (4x2 + 3)(x2 + 3)
D. (2x2 + 3)(2x2 + 3)
Answer: D
Mathematics
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