\(a,3^6=3^{2.3}=\left(3^2\right)^3=9^3.\)
\(6^3=6^3\)
Vì \(9^3>6^3\Rightarrow3^6>6^3\)
\(b,5^{30}=5^{3.10}=\left(5^3\right)^{10}=125^{10}\)
\(124^{10}=124^{10}\)
Vì \(125^{10}>124^{10}\Rightarrow5^{30}>124^{10}\)
\(c,3^{21}=3^{20}.3^1=3^{2.10}.3=9^{10}.3\)
\(2^{31}=2^{30}.2^1=2^{3.10}.2=8^{10}.2\)
Vì \(9^{10}+3>8^{10}+2\Rightarrow3^{21}>2^{31}\)
\(e,5^{28}=5^{2.14}=\left(5^2\right)^{14}=25^{14}\)
\(26^{14}=26^{14}\)
Vì \(25^{14}< 26^{14}\Rightarrow5^{28}< 26^{14}\)
\(f,27^5=\left(3^3\right)^5=3^{15}\)
\(243^3=\left(3^5\right)^3=3^{15}\)
Vì \(3^{15}=3^{15}\Rightarrow27^5=243^3\)
\(g,3^{500}=3^{5.100}=\left(3^5\right)^{100}=243^{100}\)
\(7^{300}=7^{3.100}=\left(7^3\right)^{100}=343^{100}\)
Vì \(243^{100}< 343^{100}\Rightarrow3^{500}< 7^{300}\)
a,36và 63
3^6=3^3.3^3
6^3=(2.3)^3=2^3.3^3
vi 3^3.3^3>2^3.3^3
nen 3^6>6^3
