Question

Giúp mik vs ạ

Answer 1

\(\Leftrightarrow4^x\cdot4^3=\left(4^2\right)^8=4^{16}\)

=>x+3=16

hay x=13

Answer 2

\(64\cdot4^x=16^8\)
\(\Rightarrow4^3\cdot4^x=4^{16}\)
\(\Rightarrow4^{3+x}=4^{16}\)
\(\Rightarrow3+x=16\)
\(\Rightarrow x=13\)