Question

So sánh : 8¹⁵ và 4²⁰

Answer 1

\(8^{15}=\left(2^3\right)^{15}=2^{3.15}=2^{45}\)

\(4^{20}=\left(2^2\right)^{20}=2^{2.20}=2^{40}\)

Do \(2^{45}>2^{40}\Rightarrow8^{15}>4^{20}\)