9200 = (92)100 = 81100 < 99100 .Vậy 9200 < 99100
ta có : \(9^{200}=9^{2.100}=\left(9^2\right)^{100}=81^{100}\)
vì \(81< 99\Rightarrow81^{100}< 99^{100}\)
\(\Rightarrow9^{200}< 99^{100}\)
9200 = 92.100 = ( 92 ) 100 = 81100
99100 = 99100
Vì 81 < 99 => 9200 < 99100