Question

ите уравнение с м
1) 3 [x|+|x|=20
2) | x+3 | =8.

Answer 1

Ответ:

1. $x_{1} = -5\\x_{2} =5$

2. $x_{1}=5\\x_{2} =-11$

Пошаговое объяснение:

1. $3 |x|+|x|=20\\4|x|=20\\|x|=20:4\\|x|=5\\x_{1} = -5\\x_{2} =5$

2. $| x+3 | =8\\x+3=8\\x=8-3\\x_{1}=5\\x+3=-8\\x=-8-3\\x_{2} =-11$