通分：x+1/x,x/2x+6,x-1/x^2-9

通分：x+1/x,x/2x+6,x-1/x^2-9
通分：x+1/x,x/2x+6,x-1/x^2-9

通分：x+1/x,x/2x+6,x-1/x^2-9
x+1/x =2(x+1)(x^2-9)/2x(x+3)(x-3)=(2x^3+2x^2-18x-18)/2x^3-18x
x/2x+6=x*x*(x-3)/2x(x+3)(x-3)=(x^3-3x^2)/2x^3-18x
x-1/x^2-9=2x*(x-1)/2x(x^2-9)=(2x^2-2x )/2x^3-18x

把(x+3)/(2x-2),3/(x+m)通分,可得3/(x+m)=6(x-1)/(2x^2-2)则m的值为好答案有悬赏！！ 2x -2=2(x+1)(x-1) 而2x-2=2(