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Show-that-the-sum-of-odd-coefficients-in-the-expansion-of-1-2x-3x-2-1025-is-an-even-integer-

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Question Number 22392 by Tinkutara last updated on 17/Oct/17
Show that the sum of odd coefficients in the expansion of (1 + 2x − 3x^2 )^(1025) is an even integer.
Showthatthesumofoddcoefficientsintheexpansionof(1+2x−3x2)1025isaneveninteger.

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