解方程:1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=2
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解方程:1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=2
解方程:1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=2
解方程:1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=2
1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=2
1/(x+10)+1/(x+1)-1/(x+2)+1/(x+2)-1/(x+3)+……+1/(x+9)-1/(x+10)=2
1/(x+1)=2
2(x+1)=1
2x=-1
x=-1/2
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+5)(4x*x-10x+25)=8x(x*x+1)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
解方程 x-0.4x=1
解方程:1.5x-x=1
解方程:(1/27)^x=x
x+1/x=8.125解方程
解方程 16x=1+x
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550必须用解方程
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:1/x(x+2)+1/(x+2)(x+4)+...1/(x+8)(x+10)=5/24.
解方程:1/x+1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=0
解方程X(X+1)-X(X-3)=2(X+1)(X-1)+20
解方程((13x-x^2)/(x+1))(x+(13-x)/(x+1))=42
解方程 3x/x×x-1+x×x-1/3x=5/2
解方程:(x-1)/(x²-2x)+x(2-x)=1/x
解方程[(19x-x^2)/(x+1)][x+(19-x)/(x+1)]=84.