1.

(x+1)(x2+2x+1) =?

A. x2 + 2x + 2
B. x3 + 2x2 +x + 1
C. x3 + 3x2 + 3x + 1
D. x3 + 3x2 + x + 1
Answer» D. x3 + 3x2 + x + 1


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