Expand (x+1)cube using an identity
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Answer:
The identity for the following question is (a+b)^3=a^3+3a^2b+3ab^2+b^3
so,now
(x+1)^3=x^3+3×x^2×1+3×x×1^2+1^3
=x^3+3x^2+3x+1
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