Question

[AI Nguyễn]

1. So sánh 2³³²  và  3²²³

2. So sánh 2³³³ và 3²²²

Answer 1

[Võ Đông Anh Tuấn]

1 ) Ta có : \(2^{332}< 2^{333}=\left(2^3\right)^{111}=8^{111}\)

             \(2^{223}>3^{222}=\left(3^2\right)^{111}=9^{111}\)

Vì : \(8^{111}< 9^{111}\)

\(\Rightarrow2^{332}< 3^{223}\)

2 ) Ta có : \(\left(222^3\right)^{111}=\left(2.111\right)^3=8.111^3\)

                  \(3^{222}=\left(333^2\right)^{111}=\left(3.111\right)^2=9.111^2\)

Vì : \(8.111^2< 9.111^2\)

\(\Leftrightarrow2^{333}< 3^{222}\)

Answer 2

[Nguyễn Huy Tú]

1. Ta có:

\(2^{332}< 2^{333}=\left(2^3\right)^{111}=8^{111}\)

\(3^{223}>3^{222}=\left(3^2\right)^{111}=9^{111}\)

Vì \(8^{111}< 9^{111}\) nên \(2^{332}< 8^{111}< 9^{111}< 3^{223}\Rightarrow2^{332}< 3^{223}\)

Vậy \(2^{332}< 3^{223}\)

2. Ta có:

\(2^{333}=\left(2^3\right)^{111}=8^{111}\)

\(3^{222}=\left(3^2\right)^{111}=9^{111}\)

Vì \(8^{111}< 9^{111}\) nên \(2^{333}< 3^{222}\)

Vậy \(2^{333}< 3^{222}\)