[tex]\frac{2}{x^2}=\frac{1}{3}\\\\x\neq 0\\\\D=R\setminus \left \{ 0 \right \}\\\\1*x^2=2*3\\\\x^2=6\\\\x^2-6=0\\\\(x-\sqrt{6})(x+\sqrt{6})=0\\\\x-\sqrt{6}=0\ \ lub\ \ x+\sqrt{6}=0\\\\x=-\sqrt{6}\ \ lub\ \ x=-\sqrt{6}[/tex]
[tex]stosujemy\ wzor:\\\\a^2-b^2=(a-b)(a+b)[/tex]
