Question

64×4^×=16⁸

Answer 1

\(64\cdot4^x=16^8\\ \Rightarrow4^3\cdot4^x=\left(4^2\right)^8\\ \Rightarrow4^3\cdot4^x=4^{16}\\ \Rightarrow4^x=4^{16}:4^3\\ \Rightarrow4^x=4^{13}\\ \Rightarrow x=13\)

Vậy `x=13`

Answer 2

64.4^x=16⁸

4^x=16⁸:64

4^x=(4²)⁸:4³

4^x=4¹⁶:4³

4^x=4^16-3

4^x=4¹³

x=13

Vậy x=13