Factor the difference of two squares.(81x4 - 16)
A. (3x + 2)2(3x - 2)2
B. (9x2 + 4)(3x + 2)(3x - 2)
C. (9x2 + 4)(9x2 - 4)
D. (9x2 + 4)(9x2 + 4)
Answer: B
Mathematics
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