帮我化简一下这个式子[(x^2+3x+9)/(x^2-27)]+[6x/(9x-x^2)]-[(x-1)/(6+2x)]
化简这个式子:3X^-6X+3-12X+2X
帮我解开这个式子,(2x^4-3x^3+5x^2+x)(-x+1)
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
谁帮我解一下这个式子2x^3-x^2-1
(x+2/x^2-x-6)-(2x/x^2-3x)-(x+1/x^2-6x+9)
x+2/x^2-x-6 + 2x/x^3-3x - x+1/x^2-6x+9
求化简:(x^2+3x+9)/(x^2-27)+(6x)/(9x-x^2)-(x-1)/(6+2x)
化简(x^2+3x+9)/(x^3-27)+(6x)/(9x-x^2)-(x-1)/(6+2x)
x²+3x+9/(x²-27)+6x/(9x-x²)-(x-1)/(6+2x)
化简~(x²+3x+9/x²-27)+(6x/9x-x²)-(x-1/6+2x)
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
化简式子:(x/x-1 - x/x方-1) 除以 x方-x/x方-2x+1,