Question

| | х | - 2 | = 4 | это модуль .

Answer 1

По свойству модуля
 $\left[\begin{array}{ccc}|x|-2 = 4\\ |x|-2 =-4\end{array}\right\Rightarrow \left[\begin{array}{ccc}|x|=6\\ |x|=-2\end{array}\right\Rightarrow \left[\begin{array}{ccc}x=\pm6\\ x=\O\end{array}\right$

Ответ: ±6

Answer 2

$||x|-2|=4\\ \\ |x|-2=4\\|x|-2=-4\\ \\ |x|=4+2\\ |x|=-4+2$

$|x|=6 \\ |x|=-2 \\ \\ |x|=6\\ x=+-6$