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I think you have written wrong question plz check the question the first or second bracket will be ( x+1)
then you will get the ans ( x^8 - 1 )


 x^{8}-2 x^{7}+2 x^{6}-2 x^{5}+2 x^{4}-2 x^{3}+2 x^{2} -2x+1
0 0 0
By the way your equation choice power is very pretty and nice.
X^8 - 1 
since x-1(x-1) =x^2 -1
0 0 0
(1+x^2 +x^4+x^6) (x^2-2x+1) slove tiz u get the answer
Sailesh (x-1)(x-1) is not = x^2-1
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