x÷2—x÷3

x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4) (x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3 x÷2—x÷3 x-2/x-1÷(x+1-3/x-1) (2x-6)/(x²-4x+4)÷(3-x)/(x²+6x+9)×(2-x)/(x+3) 先化简再求值[3x/(x+2)-x/(x-2)]÷2x/(x^2-4) 3x/(x-2)-x/(x+2)÷2x/(x-4)化简 x^2-x/x+1÷x/x+1 ；x^2+6x+9/x^2-9÷x+2/x-3；2/a÷4/a 计算：(x^3-3x^2)/(x^2+5x+6)÷(x^3-9x)/(x^2+2x-3)*(x+2)/(2x) 2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2 计算①x²-4／x²-4x+3÷x²+3x+2／x²-x②2x+6／4-4x+x (1-x/3-x)^2÷(x^2-6x+9/9-x^2)*1/x^2-2x+1