
(x+1/x-2)-(2x+1/x-1)
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(x+1/x-2)-(2x+1/x-1)
=(x+1)(x-1)/(x-1)(x-2)-(2x+1)(x-2)/(x-1)(x-2)
=(x^2-1-2x^2+3x+2)/(x-1)(x-2)
=-(x^2-3x-1)/(x-1)(x-2)
=(x+1)(x-1)/(x-1)(x-2)-(2x+1)(x-2)/(x-1)(x-2)
=(x^2-1-2x^2+3x+2)/(x-1)(x-2)
=-(x^2-3x-1)/(x-1)(x-2)
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