计算:(2x-6)/(x-2)÷5/(x-2)- x-2
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
x/x-3-5x/x^2-x-6计算
计算:(2x-6)/(x-2)÷5/(x-2)- x-2
计算 x(x+3)-(x-1)(x-2)
分式计算:x^5-4x^3+x+2/x^3+6x^2+12x+8(约分)
计算:(x^3-3x^2)/(x^2+5x+6)÷(x^3-9x)/(x^2+2x-3)*(x+2)/(2x)
计算:-x+(2x-2)-(3x+5)
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1
计算5x(2x² -3x+1)
计算:2x-6/4-4x+x^2除以(x+3)乘以x^2+x-6/x+3
计算:[(x²-2x+1)/(x²-1)]÷[(x-1)(x²+x)]-x