b) \(\Rightarrow3\left(-2\right)^{5x+13}=-24\)
\(\Rightarrow\left(-2\right)^{5x+13}=-8\)
\(\Rightarrow5x+13=3\Rightarrow5x=-10\Rightarrow x=-2\)
c) \(\Rightarrow\left(x+4\right)^2=36\)
\(\Rightarrow\left[{}\begin{matrix}x+4=6\\x+4=-6\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}x=2\\x=-10\end{matrix}\right.\)
Đúng 1
Bình luận (0)
