Multiply.(5x2 - 4x + 3)(x2 + 5x + 2)
A. 5x4 + 25x3 - 7x2 + 7x + 6
B. 5x4 + 25x3 - 10x2 + 7x + 6
C. 5x4 + 21x3 - 7x2 + 7x + 6
D. 5x4 + 21x3 - 10x2 + 7x + 6
Answer: C
Mathematics
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