Question

3 . 2² - | x - 3 | = 10

Answer 1

3 . 2² - | x - 3 | = 10

\(3 . 2^2 - x + 3 = 10\)

\(15-x=10\)

\(x=15-10\)

\(x=5\)

Vậy `x=5`

Answer 2

\(3.2^2-\left|x-3\right|=10\\ \Rightarrow3.4-\left|x-3\right|=10\\ \Rightarrow12-\left|x-3\right|=10\\ \Rightarrow\left|x-3\right|=2\\ \Rightarrow\left[{}\begin{matrix}x-3=2\\x-3=-2\end{matrix}\right.\\ \Rightarrow\left[{}\begin{matrix}x=5\\x=-1\end{matrix}\right.\)