(80000-x)/(60000-x)=6得多少?

x*x*x*x*x=80000? （X+X)+(X-X)+(X*X)+(X/X)=100 (80000-x)/(60000-x)=6得多少? x*x*x=504 x*x*x=504 （x+x）+(x-x)+(x/x)=11.2 f(x)=x,x x+x=x+15 X(X-1)=X 180=( )x( )x( )x( ) ×( ) (x+30)*(x-18)=x*x x+ x+(x*50%)=1.5X? f(x)=x^2+x (x 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. 80000/3=(x-200)(x-200),求x x=?x=? x-40%x= X+0.8X=? x-0.36x=