(x^2-2x+1)/(x^2-1)除以[1+(x+3)/(x+1)]化简
x+3除以2=x-(x-1)除以6
化简:(x+2)除以(x的平方-2x)-[(x-1)除以(x的平方-4x+4)]除以[(x-4)除以(x的三次方-2*x
求值:(x/x^2-1)除以(x^2+4x+3)/(x^2+2x+1)
(x^2-2x+1)/(x^2-1)除以[1+(x+3)/(x+1)]化简
化简{x²-2x分之x+2-x²-4x+4x分之x-1}除以X分之(x-1)(X-4)乘以(2-x)
化简[(X^2-2X)分之(X+2)-(X^2-4X+4)分之(X-1)]除以x-4/x^3-2x^2
函数y=2x+3除以(x-1)(x
化简x^2-1分之x^2-3x+2除以(x+1分之2x-1 -x+1)
化简:x+2分之x²+2x+1除以x-1分之x²-1-x+2分之x
解方程[(X+1)(X-1)-(X-1)(X^2+X+1)]除以X^2=1/3X
(1-x/3-x)平方除以x平方-6x+9/9-x平方*1/x平方-2x+1
(x^2-x-6分之x^2-4+x-3分之x+2)除以x-3分之x+1