(-x)^5÷x^2

计算：(x^3-3x^2)/(x^2+5x+6)÷(x^3-9x)/(x^2+2x-3)*(x+2)/(2x) 化简：[(x+2)/(x^2-4)-(2x-5)/(x-4x+4)]÷[(x-3)/(x-2)] (（x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x
通分x+4/x*x+4x与x-5/x(x-5)-2(x-5) x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x/x-3-5x/x^2-x-6计算 |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? 【【【急】】】分式计算x^2-x-6/x-3 ÷ x-3/x^2-5x+6 (x^2)^5÷(X^2)^2 x²-2x-3分之16-x²÷x-3分之x²-5x+4