(x-1)(x^2+x+1)[(1/x-1)-(1/x^2+x+1)+(1/(1-x)(1+x+x^2)拜托各位了 3Q
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(x-1)(x^2+x+1)[(1/x-1)-(1/x^2+x+1)+(1/(1-x)(1+x+x^2)拜托各位了3Q(x-1)(x^2+x+1)[(1/x-1)-(1/x^2+x+1)+(1/(1-
(x-1)(x^2+x+1)[(1/x-1)-(1/x^2+x+1)+(1/(1-x)(1+x+x^2)拜托各位了 3Q
(x-1)(x^2+x+1)[(1/x-1)-(1/x^2+x+1)+(1/(1-x)(1+x+x^2)拜托各位了 3Q
(x-1)(x^2+x+1)[(1/x-1)-(1/x^2+x+1)+(1/(1-x)(1+x+x^2)拜托各位了 3Q
原式=(x^3-1)[(x+x+1-x+1)/(x^3-1)-1/(x^3-1)] =(x^3-1)(x+2-1)/(x^3-1) =x+1
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分解因式----(X*X-X)(X*X-X-2)+1
】x(x+1)+x^2(x-1)
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