-1-x＜2-（2x-3)怎么解,

2x-(x+3-3(x+1)怎么解 1/(x+1)(x+2)+1/(x+3)(x+4)+1/(x+5)(x+6)+1/(x+7)(x+8)+1/(x+9)(x+10)怎么解 x-1+x-2+x-3+x-4+x-5+x-6+x-7=77怎么解速度! 3x(x^2-2x+1)-2x^2(x+1)这道题怎么解 (2x-3)(3x-2)-x(6x-1)+12(x-1)怎么解 (3)/(x)+(5)/(2x-1)=(x+27)/2x^2-x怎么解啊! (x+1)(x+3)+8x>(x+5)(x-5)-2怎么解 x*x+2*x+1=36,x怎么解, -1-x＜2-（2x-3)怎么解, (x+2)(x+3)-(x+6)(x-1) 怎么算? (x-1)(x+2)(x+3)(x+6)怎么做? X(X-1)+2X(X+1)-3X(2X-5)这道题目怎么解?X(X-1)+2X(X+1)-3X(2X-5)这道题目怎么解? 方程x+1/x^2-x 减去1/3x=x+5/3x-3怎么解? (x-1)(x-2)(x-3)(x-4)-(x^2-5x)^2-10(x^2-5x)怎么算? x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1怎么分解因式 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做 (2x+1)2-(x-3)(2x-1)=3x怎么解