Question

Answer 1

\(x^{20}:9^{10}=4^{20}\)

\(x^{20}:3^{20}=4^{20}\)

\(x^{20}=12^{20}\)

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

Answer 2

\(=>x^{20}:3^{\left(2.10\right)}=4^{20}\)

\(x^{20}:3^{20}=4^{20}\)

\(x^{20}=4^{20}.3^{20}=12^{20}\)

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