Shown isthat i 2-1 is divisible byan odd positive integer. – InterviewSolution

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Shown isthat i 2-1 is divisible byan odd positive integer.

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i think the question is wrong as if we take x =2 then 2^2-1=3 which is not divisible by 2

x^2-1^2=(x-1)(x+1); let x be 2x+1; =(2x+1-1)(2x+1+1)=(2x)(2x+2)=4x^1+4x=4x(x+1)

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