5(X-3)+1

x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 5x(3x-2)-(x+1) 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x (X-1)^3(x-2)(x-3)^2(x-5) 1/(x+3)-(x-2)/(x^2-5x+6) 因式分解 (x+1)(x+3)(x+5)(x+7)+15 换元法 (x+1)(x+3)(x+5)(x+7)+15 (x-1)(x-3)(x-5)(x-7)-9 因式分解