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1/x²;-4與x/4-2x 1/x²;-4=1/(x-2)(x+2)=2/2(x-2)(x+2)x/4-2x =-x/2(x-2)=-x(x+2)/2(x-2)(x+2)=(-x^2-2x)/2(x-2)(x+2)x/(x-1)²;與1/x²;-1 x/(x-1)²;=x/(x-1)(x-1)=x(x+1)/(x-1)(x-1)(x+1…
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