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(1+x)(sum(r=0)^n nCr x^r)+(1+x^2)(sum(r=...

`(1+x)(sum_(r=0)^n nC_r x^r)+(1+x^2)(sum_(r=0)^ (n-1) (n-1) C_r x^r)+....(1+x^n) (sum_(r=0)^1 1C_r x^r)=a_0+a_1x+a_2 x^2+..........+a_(n+1) x^(n+1)`, then the value of `a_0/a_(n+1)+a_1/a_n+a_2/a_(n-1)+.......+a_(n+1)/a_0` is equal to

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