计算：2x-1/6-5x+1/4＜1；1-x/3≤-x+10/2；请写出详细计算过程.

计算（x*x+4x+5）/（x+2）-（x*x+6x+10）/（x+3）+1 计算:[(x^2 - 4)/(x^2 - x - 6) + (x+2)/(x-3)] / (x+1)/(x-3) 计算:(4x^4-6x^2+2)(5x^3-2x^2+x-1), 计算：(2x+3)(3x-4)>(x+1)(x-1)+5x(x+3)+7 计算：4x(x^2-2x-1)+x(2x+5)(5-2x) 计算x^2-5x+6/x^2-1/x^2+x/x-3 计算5(x^2+x-3)-4x(6+x)+x(4-x)=02x(x-1)-x(2x-5) 计算：(x-1)(x^2-4X+3)-x(x^2-5X+2)有过程 计算1/x(x+2)+1/(x+2)(x+4)+1/(x+4)(x+6)+...1/(x+2004)(x+2006) 计算(x-2)/(x^2-4)+(x-4)/(x^2-5x+4)-(2x+1)/(x^2+x-2) 计算：（x+1)(x-2)(x-3)(x-6) 计算:[(x+2)/(x+3) - (x+1)/(x+2) + (x+4)/(x+5) - (x+3)/(x+4) / (x^2 + 7x + 13)/(x^2 + 8x + 15) 计算(x+1)(x+2)(x+3)(x+4) 如何计算 (x+1)(x+2)(x+3)(x+4) 计算(X-1)(X-2)(X-3)(X-4) (x-1)(x-2)(x-3)(x-4)-24计算 如何计算（x-1)(x-2)(x-3)(x-4)-(x^2-5x)^2-10(x^2-5x) 1.用公式计算：COSX=1-X*X/2!X*X*X*X/4!-X*X*X*X*X*X/6!.直到最后一项的绝对