[x÷35+(2x-14)÷28)]-[ x÷28+(2x-14)÷35]= 12÷60 怎么算,
方程[x÷35+(2x-14)÷28)]-[ x÷28+(2x-14)÷35]= 24÷60怎么解?要过程
[(x+2)/(x²+2x)-(x-1)/(x²-4x+4)]÷(x-4)/x
先化简(x平方-4x+4)/(x平方-2x)÷(x-4/x)
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1
(5x+14)÷(x+2)=?
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算
计算:[(x²-2x+1)/(x²-1)]÷[(x-1)(x²+x)]-x
已知x^2-3x=2x+14求(4x^3-6x^2+2x)÷(2x)-(x+1)^2+1的值
化简求值 (x³+4x²)÷x+(2x+1)(2x-1)-4x(x+1) x=-2
先化简,再求值(2x-6)/(4-4x+x^2)÷ (x+3)× (x^2+x-6)/(3-x),其中x=-1/2
先化简,再求值:(1)(x+1/x²-x-x/x²-2x+1)÷1/x,x=根号2+1