方程x+1-(x²-x+3)/(x-1)=4的解是0吗?
问题描述:
方程x+1-(x²-x+3)/(x-1)=4的解是0吗?
答
x+1-(x²-x+3)/(x-1)=4
(x+1)(x-1)-(x²-x+3)=4(x-1)
x²-1-x²+x-3=4x-4
x-4=4x-4
3x=0
x=0
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