Ta có: 7200 < 8200 = (23)200 = 2600 < 2700
=> 2700 > 7200
\(2^{700}=2^{7.100}=\left(2^7\right)^{100}=128^{100}.\)
\(7^{200}=7^{2.100}=\left(7^2\right)^{100}=49^{100}.\)
Vì \(128^{100}>49^{100}\left(128>49\right).\)
\(\Rightarrow2^{700}>7^{200}.\)
Vậy.....