(3x+100)÷4=x-100

x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 （X+X)+(X-X)+(X*X)+(X/X)=100 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 1x+2x+3x+4x+5x+6x+7x…+99x=100 解方程:x-2x+3x-4x+...+99x-100x=25 解方程：x-2x+3x-4x+.+99x-100x=25 x-2x+3x-4x+...+99x-100x=25 已知x^4+x^3+x^3+x^2+x^1+1=0,求x^100+x^99+x^98+x^97+x^96的值 先化简再求值(x+3x+5x+7x+.+101x)-(2x+4x+6x+...100x),其中x=51分之2 f(x)=x(x-1)(x+2)(x-3)(x+4)……(x+100),求f'(1) 已知x^4+x^3+x^2+x+1=0,求x^100+x^99+x^98+x^97+x^96的值. 已知x^4+x^3+x^2+x^2+1=0,求x^100+x^99+x^98+x^97+x^96的值见上 已知x^4+x^3+x^2+x+1=0,求x^100+x^99+x^98+x^97+x^96的值 x^4+X^3+X^2+X^1+1=0求x^100+X^99+X^98+X^97+X^96的值 3x=x+100 x=? 化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4 解方程：（1）2x-19=7x+31 (2)20-2x=x-1 (3)19-x=100-10x (4)1/3x+5=2/3x-62x-19=7x+317x-2x=-19-31这里应该是31+19吧？5x=-50x=-50÷5x=-10