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2^333 = (2^3)^111 = 8^111
3^222 = (3^2)^111 = 9 ^111
Vì 8< 9 => 8^111 < 9^111 => 2^333 < 3^222
Ta có: 2^333 = (2^3)^111 = 8^111
3^222 = (3^2)^111 = 9^111
Vì 8^111 < 9^111 nên 2^333 < 3^222
\(2^{333}=\left(2^3\right)^{111}=8^{111}\\ 3^{222}=\left(3^2\right)^{111}=9^{111}\)
VÌ\(8^{111}< 9^{111}\Rightarrow2^{333}< 3^{222}\)
ta có 2^333=(2^3)^111=8^111
3^222=(3^2)^111=9^111
vi 8^111<9^111
=>2^333<3^222
ta có: 2333 = (23)111 = 8111
3222 =(32)111 = 9111
=> ....
TC \(2^{333}=\)\(2^{3.111}\)\(\left(2^3\right)^{111}=8^{111}\)
LC \(3^{222}=3^{2.111}=\left(3^2\right)^{111}=9^{111}\)
MÀ 8<9
\(\Rightarrow8^{111}< 9^{111}\)
\(hay\)\(2^{333}< 3^{222}\)
a/ \(3^{150}=\left(3^2\right)^{75}=9^{75}\)
\(2^{225}=\left(2^3\right)^{75}=8^{75}\)
\(9^{75}>8^{75}\Rightarrow3^{150}>2^{225}\)
b/
\(20162016^{10}=\left(2016.10001\right)^{10}=2016^{10}10001^{10}\)
\(2016^{20}=2016^{10}.2016^{10}\)
\(10001^{10}>2016^{10}\Rightarrow2016^{10}.10001^{10}>2016^{10}.2016^{10}\Rightarrow20162016^{10}>2016^{20}\)
c/ \(\frac{222^{333}}{333^{222}}=\frac{\left(222^3\right)^{111}}{\left(333^2\right)^{111}}=\frac{\left(2^3.111^3\right)^{111}}{\left(3^2.111^2\right)^{111}}=\left(\frac{8.111}{9}\right)^{111}\)
\(\frac{888}{9}>1\Rightarrow\left(\frac{888}{9}\right)^{111}>1\Rightarrow222^{333}>333^{222}\)
a) Ta có: 3^150 = 3^2.75 = (3^2)^75 = 9^75
2^225 = 2^3.75 = (2^3)^75 = 8^75
Vì 9 > 8 nên 9^75 > 8^75
Vậy 3^150 > 2^225
b) Ta có: 2016^20 = 2016^10+10 = 2016^10 . 2016^10
20162016^10 = (10001 . 2016)^10 = 10001^10 . 2016^10
Vì 2016^10 < 10001^10 nên 2016^10 . 2016^10 < 10001^10 . 2016^10
Vậy 2016^20 < 20162016^10
\(333^{333}=3^{333}.111^{333}\)
\(555^{222}=5^{222}.111^2\)
\(3^{333}=27^{111}>5^{222}=25^{111}\) (1)
\(111^{333}>111^{222}\)(2)
Từ (1) và (2) \(\rightarrow333^{333}>555^{222}\)
2^333 = (2.3)^111 = 6^111
3^222 = (3.2)^111 = 6^111
=> 2^333 = 2^222 ( = 6^111)
2^333 va 3^222
2^333=2^3*111
3^222=3^2*111
2^3=8
3^2=9
=> 8<9 nen 2^3<3^2
vay 2^333<3^222