Math miscellaneousEasy

Question

The coefficients of x^p and x^q in the expansion of (1+x)^p+q are

Options

A.equal

B.equal with opposite signs

C.reciprocals of each other

D.none of these

Solution

We have t_{p + 1} = ^p+qC_px^p and t_{p + 1} = ^p+qC_qx^q ^p+qC_p = ^p+qC_q.

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