Multiply.(x2 + x + 10)(x2 + x + 7)
A. x4 + 2x3 + 18x2 + 17x + 70
B. x4 + x3 + 17x2 + 17x + 70
C. x4 + 2x3 - 17x2 + 3x + 70
D. x4 + x3 - 16x2 - 17x + 70
Answer: A
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