\[{{(1+x)}^{n}}-nx-1\] divisible (where \[n\in N\])

1.	\[{{(1+x)}^{n}}-nx-1\] divisible (where \[n\in N\])
A.	by \[2x\]
B.	by \[{{x}^{2}}\]
C.	by \[2{{x}^{3}}\]
D.	All of these
Answer» C. by \[2{{x}^{3}}\]

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\[{{(1+x)}^{n}}-nx-1\] divisible (where \[n\in N\])

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