解方程9(x-2)^2=4(x+1)^2
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
解方程6^x+4^x=9^x,9^(-x)-2*3^(1-x)=27
解方程:x(2X-3)+2x(x-1)=4x(x-2)+9
解方程:2x(x-2)-6x(x-1)=4x(1-x)+16.
解方程1/x(x+1)+1/(x+1)(x+2)+...+1/(x+8)(x+9)=2x+3/x(x+9)
解方程:1\x(x+1)+1\(x+1)(x+2)+.+1/(x+8)(x+9)=2x+3\x(x+9)
解方程.4x=42(x+2) 4x=4.3(x-9)
解方程:(x-2)2-(x+3)(x-3)=4x-1
解方程:(X+1)(X+2)(X+3)(X+4)=120
解方程.(1)9x+73x+2-4x+52x+3
解方程4X(2X+1)=3X(5X-1)