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[" If "(19)" If "n" is an odd integer,th...

[" If "(19)" If "n" is an odd integer,then show that "n^(2)-1/8],[" divisible by "8" .ICRS "]

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if n is an odd integer, then show that n^(2) - 1 is divisible by 8.

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If n is an odd positive integer,show that (n^(2)-1) is divisible by 8.

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Prove that 3^(2n)-1 is divisible by 8.

If n is a positive integer,then show tha 3^(2n+1)+2^(n+2) is divisible by 7.

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(a)Prove that 3^(2n)-1 is divisible by 8.