\[\boxed{\text{133.}\text{\ }\text{ОК\ ГДЗ\ -\ домашка\ на\ 5}}\]
\[(x + 3)^{2} - (x - 3)^{2} =\]
\[= (x - 2)^{2} + (x + 2)^{2}\]
\[x^{2} + 6x + 9 - x^{2} + 6x - 9 =\]
\[= x^{2} - 4x + 4 + x^{2} + 4x + 4\]
\[12x = 2x^{2} + 8\]
\[x^{2} - 6x + 4 = 0\]
\[D = 3^{2} - 4 = 9 - 4 = 5\]
\[x_{1,2} = 3 \pm \sqrt{5}\text{\ \ \ }\]