Question

So sánh \(3^{12}\)và \(2^{20}\) ; \(2^{21}\)và \(3^{14}\)

Answer 1

\(3^{12}< 2^{20}\)

\(2^{21}< 3^{14}\)

Answer 2

\(3^{12};2^{20}=27^4;32^4\)

\(\Rightarrow3^{12}< 2^{20}\)

\(2^{21};3^{14}=8^7;9^7\)

\(\Rightarrow2^{21}< 3^{^{14}}\)