
解方程:(x+2)/(x^2 - 2x) - (2x-1)/(x^2 - 4) = (1-x)/x(x+2)
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(x+2)/(x^2 - 2x) - (2x-1)/(x^2 - 4) = (1-x)/x(x+2)
(x+2)/x(x-2) - (2x-1)/(x-2)(x+2)= (1-x)/x(x+2)
(x+2)^2-x(2x-1)=(1-x)(x-2)
x^2+4x+4-2x^2+x=-x^2+3x-2
2x=-6
x=-3
(x+2)/x(x-2) - (2x-1)/(x-2)(x+2)= (1-x)/x(x+2)
(x+2)^2-x(2x-1)=(1-x)(x-2)
x^2+4x+4-2x^2+x=-x^2+3x-2
2x=-6
x=-3
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