Multiply.(5xy2 + 9x)(5xy2 - 9x)
A. 25x2y4 - 90x2y4 - 81x2
B. 25x2y4 - 81x2
C. 10x2y4 - 18x2
D. 10x2y4 - 90x2y4 - 18x2
Answer: B
Mathematics
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