作业帮化简(1/x-3-x+1/x-1)x(x-3)
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化简(1/x-3-x+1/x-1)x(x-3)
化简(1/x-3-x+1/x-1)x(x-3)
化简(1/x-3-x+1/x-1)x(x-3)
(1/x-3-x+1/x-1)x(x-3)
=[(x-1)-(x-3)(x+1)]/(x-3)(x-1) ×(x-3)
=[x-1-x方+2x+3]/(x-1)
=(-x方+3x+2)/(x-1)