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If |x^n x^(n+2)x^(2n)1x^a a x^(n+5)x^(a+...

If `|x^n x^(n+2)x^(2n)1x^a a x^(n+5)x^(a+6)x^(2n+5)|=0,AAx in R ,w h e r en in N ,` then value of `a` is `n` b. `n-1` c. `n+1` d. none of these

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