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Prove that the coefficient of x^n in the expansion of (1 + x)^2n is twice the coefficient of x^n in the expansion of (1 + x)^2n – 1.

asked Jan 12, 2017 in Mathematics by Rohit Singh (61,782 points)

Prove that the coefficient of xⁿ in the expansion of (1 + x)²ⁿ is twice the coefficient of xⁿ in the expansion of (1 + x)^{2n – 1}.

1 Answer

answered Jan 13, 2017 by vikash (21,277 points)
selected Jan 13, 2017 by Rohit Singh

Best answer

Solution:

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commented Jul 26, 2017 by albinsaju2 (12 points)

good explanation

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Prove that the coefficient of x^n in the expansion of (1 + x)^2n is twice the coefficient of x^n in the expansion of (1 + x)^2n – 1.

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