(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
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)
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
[(x+2)/(x²+2x)-(x-1)/(x²-4x+4)]÷(x-4)/x
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
3/x-1=4/x 6/x+1=x+5/x(x+1)
解方程:x(2X-3)+2x(x-1)=4x(x-2)+9
﹣(x²-5-4x)-x(x²+x-1),其中x=-1.先化简再求值
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算