8.|x+3.2x=16.5

8.|x+3.2x=16.5 （X+X)+(X-X)+(X*X)+(X/X)=100 x+180%x=3.2 x-0.36x=3.2 X+5x=8. x*x*x*x*x=80000? x²+x-1=0 2.3x²+6x-1=0 3.2x²-5x-4=0 4.3x²-9x+2=0 5.3x²+9=12 6.x²-8x=84 7.x²-2x-399=0 8.﹣3x²+22x-24=0 9.2x²-6=x-3 10.3x²+10x+5=0 x*x*x=504 x*x*x=504 （x+x）+(x-x)+(x/x)=11.2 求x 的值.x +3.5x =9.9;4.25x -x =4.55;10x -2.7x =58.4;6.8x +3.2x =100 f(x)=x,x x+x=x+15 X(X-1)=X 180=( )x( )x( )x( ) ×( ) x+3.2x=4.8 16+7x=45 5.2x-x=32.4 (x+30)*(x-18)=x*x x+ x+(x*50%)=1.5X? f(x)=x^2+x (x