解方程:x(x-1)/1+x(x+1)/1…+(x+9)(x+10)/1=11?12
解方程:x(x-1)/1+x(x+1)/1…+(x+9)(x+10)/1=11?12
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
1/x(x+1)+1/(x+1)(x+2)+...+1/(x+9)(x+10)=1/(x+10),解方程
解方程:2x(x-1)-x(3x+2)=-x(x+2)-12
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
解方程:1/(x*x+11x-8)+1/(x*x+-8)+1/(x*x-3x-8)=0
解方程:x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
解方程:(2x+5)(4x*x-10x+25)=8x(x*x+1)
解方程 3x/x×x-1+x×x-1/3x=5/2
解方程((13x-x^2)/(x+1))(x+(13-x)/(x+1))=42
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8