Question

(
${49}^{15} - 1 \: is \: divisible \: for \:$
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Answer 1

Answer:-

49^15-1

(x^n-1)is divisible by (x+1)only when n is even.

(49^15-1)={(7^2)^15-1)}=(7^30-1)which is divisible by (7+1)i.e,8 ans.

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