3(x+2)=4(x+1)
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
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
解方程:x(2X-3)+2x(x-1)=4x(x-2)+9
(3x/x-1-x/x+1)×x²-1/x 其中x=根号2-2 先化简
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算
1/(x+1)(x+2) + 1/(x+2)(x+3) + 1/(x+3)(x+4) + ...+ 1/(x+2005)
①(x+4x+8)+3x(x+4x+8)+2x②(2x-3x+1)-22x+33x-1③(6x-1)(2x-1)(3x-
(3x^2+9x+7)/(x+1)-(2x^2-4x+3)/(x-1)-(x^3+x+1)/(x^2-1)是不是错了?
先化简,再求值:[x+2/(x^2-2x)-(x-1)/(x^2-4x+4)]÷2x-8/(x^3-2x^2)