Question

\(\dfrac{\left|x-3\right|}{\sqrt{16}}=\sqrt{9}\)
mik đang cần rất gấp ạ :((

Answer 1

|x - 3| = 4.3

|x - 3| = 12

x - 3 = 12 hoặc x - 3 = -12

*) x - 3 = 12

x = 12 + 3

x = 15

*) x - 3 = -12

x = -12 + 3

x = -9

Vậy x = -9; x = 15

Answer 2

\(\dfrac{\left|x-3\right|}{\sqrt{16}}=\sqrt{9}\)

\(\Rightarrow\left|x-3\right|=3\cdot4\)

\(\Rightarrow\left|x-3\right|=12\)

\(\Rightarrow\left[{}\begin{matrix}x-3=12\\x-3=-12\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=15\\x=-9\end{matrix}\right.\)