解方程:x^3+9x^2=100,x^3+6=7x^2,x^3+3x^2=2 .
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
解方程:(x-2)(x^2-6x-9)=x(x-5)(x-3)
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7)
解方程:x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6
解方程】(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
解方程:2(X-3)(X+5)=X平方+(X+2)(X-2)+(X+7)