酷派cool1和cool1c:3x+(5x-3)+(6x+2)=146

x^6+x^5+x^4+x^3+x^2+x+1=0 3x+(5x-3)+(6x+2)=146 谁会解这道题：(X-5)/(X-7)+(X-2)/(X-4)=(X-3)/(X-5)+(X-4)/(X-6)求X的值 解方程式3x*x*x+x*x=2 1+x+x^2+x^3=0 ,求x+x^2+x^3+...+x^2000 解方程(x+1)(x+2)(x+3)(x+4)=(x+1)(x+1)+(x+2)(x+2)+(x+3)(x+3)+(x+4)(x+4) (x+1)(x+2)(x+3)(x+4)=(x+1)(x+1)+(x+2)(x+2)+(x+3)(x+3)+(x+4)(x+4) x*(x/3)=(x-5)*(x/3+1)/2 x=? (x-4)(x-2)-(x-1)(x+3),其中x=-2/5 11*（6-x)/3*(x-4)=10*(5-x)/3*(x-4)-5(6-x)/(x-2) 求x.