Question

mn giúp mik nhanh nhé, làm đầy đủ:> mik sẽ tym cho=)))

Answer 1

h: Ta có: \(\dfrac{5}{x+3}=\dfrac{x+3}{5}\)

\(\Leftrightarrow\left(x+3\right)^2=25\)

\(\Leftrightarrow\left[{}\begin{matrix}x+3=-5\\x+3=5\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=-8\\x=2\end{matrix}\right.\)