Factor completely, if possible.n4 - n3 - n + 1
A. (n - 1)2(n2 + n + 1)
B. n3(n - 1) - (n - 1)
C. n4 - n3 - n + 1
D. n(n3 - 1) - (n3 - 1)
Answer: A
Mathematics
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