解方程:120/x=120/(x+2)+3120/x=120/(x+2)+3

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解方程:120/x=120/(x+2)+3120/x=120/(x+2)+3解方程:120/x=120/(x+2)+3120/x=120/(x+2)+3解方程:120/x=120/(x+2)+3120

解方程:120/x=120/(x+2)+3120/x=120/(x+2)+3
解方程:120/x=120/(x+2)+3
120/x=120/(x+2)+3

解方程:120/x=120/(x+2)+3120/x=120/(x+2)+3
120/x=120/(x+2)+3
120(x+2)=120x+3x(x+2)
120x+240=120x+3x^2+6x
3x^2+6x-240=0
x^2+2x-80=0
(x-8)(x+10)=0
x=8,x=-10

120(X+2)=120X+3X^2+6X
X^2+2x-80=0
X=4或-5

120(x+2)=120x+3x(x+2)
240=3x*x+6x
x*x+2x-80=0
(x+1)(x+1)=81
x+1=+-9
x=-10,x=8

120(x+2)=120x+3x(x+2)
240=3x*x+6x
x*x+2x-80=0
(x+1)(x+1)=81
x+1=+-9
x=-10,x=8