初中分式加减题1.1/(m^2-3m)-2/(m^2-9)2.x^3/(x-1)-x^2-x-13.a-2-a^2/(a+2)4.(x-1-8/(x+1))÷x+3/x+1

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初中分式加减题1.1/(m^2-3m)-2/(m^2-9)2.x^3/(x-1)-x^2-x-13.a-2-a^2/(a+2)4.(x-1-8/(x+1))÷x+3/x+1

初中分式加减题1.1/(m^2-3m)-2/(m^2-9)2.x^3/(x-1)-x^2-x-13.a-2-a^2/(a+2)4.(x-1-8/(x+1))÷x+3/x+1
初中分式加减题
1.1/(m^2-3m)-2/(m^2-9)
2.x^3/(x-1)-x^2-x-1
3.a-2-a^2/(a+2)
4.(x-1-8/(x+1))÷x+3/x+1

初中分式加减题1.1/(m^2-3m)-2/(m^2-9)2.x^3/(x-1)-x^2-x-13.a-2-a^2/(a+2)4.(x-1-8/(x+1))÷x+3/x+1
1、-(1/m*(m+3));
2、1/(x-1);
3、-(4/a+2);
4、(2*x^2+4*x-5)/(x*(x+1))

1.-1/(m+3)m
2.-x^2-x+1/x-1
3.-4/a+2
4.x-3