【答案】:
解:原方程可化為(|x|-1)(|x|-2)=0
∴|x|-1=0或|x|-2=0
∴$x_1=1,$$x_2=-1,$$x_3=2,$$x_4=-2$
【解析】:
原方程可化為$(|x| - 1)(|x| - 2) = 0$,
$\therefore |x| - 1 = 0$或$|x| - 2 = 0$,
$\therefore |x| = 1$或$|x| = 2$,
$\therefore x = 1$或$x = -1$或$x = 2$或$x = -2$,
$\therefore x_{1}=1$,$x_{2}=-1$,$x_{3}=2$,$x_{4}=-2$。