1÷（x+1)+1÷（x+10)＝1÷（x+2 )+1÷（x+9) 解方程 除号为分数形式

x-1/x÷(x-1/x) 化简(x^2-2x+1)/(x^2+1)÷(x-1)/(x^2+x)-x 【{x²-4x+4/x²-4}-x/x+2】÷x-1/x+2 [x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简[x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简 (x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3 [1-x+(x-1/x)]÷[1-(1/x+1)] (x-x²/x+1)÷(1-x²-1) 计算：( x-1)/x÷[x-(1/x)] x/x^2-2x÷(x^2-4)^-1 x^2-10x+25/x-1÷x^2-1/5-x (x²-x+1)÷(x²-x-1)=(x²+x)÷(x²+x-2)解方程 x²-1/x²-2x+1÷x+1/x-1 X 1-x/1+x 1.x/x-y * y^2/x+y -x^4y/x^4-y^4÷ x^2/x^2+y^2 2.(x^2-4/x^2-x-6+ x+2/x-3)÷ x+1/x-33.(x+1-1/1-x)÷（x- x^2/x-1)4.x-1/x^2+3x+2/6/2+x-x^2-10-x/4-x^21111111111111111111111111111111 计算:2x/(x-2)(x+1)÷(1－x/x+1)-x²+2x/x²-4? X×X－3X＋1=0求分式X×X÷〈X×X×X×X+3X×X+1〉 X^2-3X-2=0,求( x - 2x-1/x )÷(x-1)/(x^2-2x) (2x-6)/(x^2-9)+(x^2+2x+1)/(x^2+x-6)÷(x+1)/(x-2) 化简(x^2-1)(x+1)/x^2-x÷(1 +x^2+1/2x)