3x-1>11,2x

(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1 求x^2-3x/x^2-6x+9*x^2-11x+30/x^2-5x-1 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2) 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 1+x+x^2+x^3+.+x^99+x^100 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| x(x+1)^3+x(x+1)^2+x(x+1)+x+1因式分解 x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 就这两道题,1、|x+1|+|x-2||x+1|+|x-2|+|x-1||x+2|+|x-2|+|x+3|+|x-1||