1.3X﹣0.44=0.6 30X÷2=360 3.6×5﹣2X=11.6

1.3X﹣0.44=0.6 30X÷2=360 3.6×5﹣2X=11.6 化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4 x+x÷3+2x-30=180 设f(x)=x+2÷x(x x-2/3x+x+2/7x=30 x^2=(x+30)X(x-18)怎么解 (x+30)*(x-18)=x*x 1.当X=12时,X+19（）30,60-X（）32 2.X=0.2时,0.6X（）0.12,X÷2（）0.2 f(x)=x^2+x (x (x²-x+1)÷(x²-x-1)=(x²+x)÷(x²+x-2)解方程 X^2-3X-2=0,求( x - 2x-1/x )÷(x-1)/(x^2-2x) 1 .30/0.5x-30/0.6x=2 2 .x/4-x/5=0.1 2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2 2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2 x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)2.2/3+x/(3x-1)=1/9x-3 当x=﹣3.2时,求x^2-4x+4÷x^2-4÷x-2÷x^2+2x+3的值 (x+x)+(x-x)+(x*x)+(x÷x)=81 x^2=x