化简 x+2x+3x+...+100x
(x+2x+3x+.100x )化简
1+x+x^2+x^3+.+x^99+x^100
2x+3x+4x+5x+x+6x+7x=100
化简(X+2)\(X^2+X)+(2X+1)\(X^2+3X+2)-(X-3)\(X^2+2X)
(X+X)+(X-X)+(X*X)+(X/X)=100
(x^3-3x^2-x+3)/(x-2)化简~
x^2+2x/3x^2+x-10化简
-(x²-2x)+(-3x+2x²)化简!
(x+2)(x-2)+x(3-x)化简
化简[(2X-3/X)-1]/(X平方-9/X)
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
化简(x^2+3x+9)/(x^3-27)+(6x)/(9x-x^2)-(x-1)/(6+2x)