解方程:1/(x-1)-6/(1-x³)=(x-1)/(x²+x+1)
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解方程:1/(x-1)-6/(1-x³)=(x-1)/(x²+x+1)
解方程:1/(x-1)-6/(1-x³)=(x-1)/(x²+x+1)
解方程:1/(x-1)-6/(1-x³)=(x-1)/(x²+x+1)
1/(x-1)-6/(1-x³)=(x-1)/(x²+x+1)
(x²+x+1)/(x³-1)+6/(x³-1)=(x-1)²/(x³-1)
(x²+x+1)+6=(x-1)²
x²+x+7= x²-2x+1
3x=-6
x=-2
1/(x-1)+6/(x-1)(x²+x+1)=(x-1)/(x²+x+1)
两边乘(x-1)(x²+x+1)
x²+x+1+6=x²-2x+1
3x=-6
x=-2