化简:(2x+3)/(8x^3+27)
化简(x^2+3x+9)/(x^3-27)+(6x)/(9x-x^2)-(x-1)/(6+2x)
化简~(x²+3x+9/x²-27)+(6x/9x-x²)-(x-1/6+2x)
化简:1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+...+1/(x+8)(x+9)
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
化简:9x-12x+5x,3x-5x-2+5x+8,3x+5+2x+3-7-11x
化简(X+2)\(X^2+X)+(2X+1)\(X^2+3X+2)-(X-3)\(X^2+2X)
化简:(x^2+3x+9)/(x^3-27)+6/(9-x^2)-(x-1)/(6+2x)
(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!