Question

SO SÁNH 

16²⁰và 2⁴⁰.4²¹

 

 

Answer 1

Ta có: \(16^{20}=\left(2^4\right)^{20}=2^{80}\)

\(2^{40}.4^{21}=2^{40}.\left(2^2\right)^{21}=2^{40}.2^{41}=2^{81}\)

\(\Rightarrow2^{40}.4^{21}>16^{20}\)