Multiply the polynomials.(x2 + 2y2 - xy)(3x2 - y2 + 4xy)
A. 3x4 + 4x3y - 3x2y2 + 9xy3 - 2y4
B. 3x4 + x3y - 3x2y2 + 8xy3 - 2y4
C. 3x4 + 4x3y + x2y2 + 8xy3 - 2y4
D. 3x4 + x3y + x2y2 + 9xy3 - 2y4
Answer: D
Mathematics
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