Simplify to form an equivalent expression by combining like terms. -7x2 + 5x3 + 7x - x2 + 7x - x3
A. 4x3 - 8x2 + 14x
B. 5x3 - 7x2 + 14x - x3 - x2
C. 4x3 - 8x2 + 7 x
D. 5x3 - 7x2 + 14x
Answer: A
Mathematics
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