a, \(2^{300}=2^{3.100}=8^{100}\)
\(3^{200}=3^{2.100}=9^{100}\)
Vì \(9^{100}>8^{100}\Rightarrow3^{200}>2^{300}\)
b, \(2^{91}=2^{13.7}=8192^7\)
\(5^{35}=5^{5.7}=3125^7\)
Vì \(8192^7>3125^7\Rightarrow2^{91}>5^{35}\)
c, \(9^{12}=\left(3^3\right)^{12}=3^{36}\)
\(27^7=\left(3^3\right)^7=3^{21}\)
Vì \(3^{36}>3^{21}\Rightarrow9^{12}>27^7\)
a) 2^300= 2^3.100=8^100
3^200=3^2.100=9^100
Vì 9^100>8^100 => 3^100>2^300
b) 2^91=2^13.7=8192^7
5^35=5^5.7=3195^7
Vì 8192^7>3125^7 => 2^91>5^35
c) 9^12=(33)12=3^36
27^7=(33)7=3^21
Vì 3^36>3^21 => 9^12>27^7
2300=(23)100=8100
318=(32)100=9100
vì 9>8=>9100>8100
