计算:x/(x-1)-(x+3)/(x^-1)*(x^2+2x+1)/(x+3)

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计算:x/(x-1)-(x+3)/(x^-1)*(x^2+2x+1)/(x+3)计算:x/(x-1)-(x+3)/(x^-1)*(x^2+2x+1)/(x+3)计算:x/(x-1)-(x+3)/(x^

计算:x/(x-1)-(x+3)/(x^-1)*(x^2+2x+1)/(x+3)
计算:x/(x-1)-(x+3)/(x^-1)*(x^2+2x+1)/(x+3)

计算:x/(x-1)-(x+3)/(x^-1)*(x^2+2x+1)/(x+3)
1/(x-1)
x/(x-1)-(x-3)/(x-1)(x+1)*(x+1)(x+1)/(x+3)=x/(x-1)-(x-3)(x+1)/(x-1)(x+3)=1/(x-1)