a)\(27^2\)và \(4^6\)
\(27^2=\left(3^3\right)^2\)
\(4^6=\left(2^3\right)^2\)
\(3^3>2^3\)
b) \(3^{500}=\left(3^5\right)^{100}\)
\(7^{300}=\left(7^3\right)^{100}\)
\(7^3=343\)
\(3^5=243\)
\(\Rightarrow3^{500}< 7^{300}\)
c) \(8^5=4^5\cdot2^5\)
\(3\cdot4^7=3\cdot4^2\cdot4^5\)
\(3\cdot4^2>2^5\)
\(3\cdot4\cdot4=2\cdot2\cdot2\cdot2\cdot3>2\cdot2\cdot2\cdot2\cdot2\)
\(8^5< 3\cdot4^7\)
d) \(202^{303}=\left(202^3\right)^{101}\)
\(303^{202}=\left(303^2\right)^{101}\)
\(202^3>303^2\)
Nên
a. 272 = (33)2 = 36 < 46
b. 3500 = (35)100 = 243100
7300 = (73)100 = 343100
Vì 243100 < 343100 nên 3500 < 7300
c. 85 = 2.214
3.47 = 3.214
Vì 2.214 < 3.214 nên 85 < 3.47
d. 202303 = (23.1013)101 = (8.101.1012)101
303202 = (32.1012)101 = (9.1012)101
Vì (8.101.1012)101 > (9.1012)101 nên 202303 > 303202
