解(10X+1)(500-10X)=8000(10X+1)(500-10X)=8000 我算了很久还是不对.郁闷.

解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550必须用解方程 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:1/x+1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=0 10X(4x+1)+x-10x+4x+1=63怎么解 试解方程：2/(x+1)(x+2) + 2/(x+2)(x+3)＋ … ＋2/(x+10)(x+11)=5x/(x+1)(x+11) 80%x+30-x=10%x X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4) 80%*x+30=x+x*10%怎么解 80%X*(1+50%)=10+X 求X是多少? X-5X-(10X+1)=1怎么解? 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. (x+1)^x=10 怎么解. x*x=(x+10)*(x-6)怎么解 x+x+1=(10x+x+1)×5 解方程： （93-X+/10X)-(X-1/10X)=3（93-X+1/10X)-(X-1/10X)=3