Question

So sanh 2^30 va3^20

Answer 1

Ta có 

\(2^{30}=\left(2^3\right)^{10}=8^{10}\)

\(3^{20}=\left(3^2\right)^{10}=9^{10}\)

Vì 8 < 9 hay \(8^{10}< 9^{10}\)nên \(2^{30}< 3^{20}\)

Answer 2

Ta có:

\(2^{30}=\left(2^3\right)^{10}=8^{10}\)

\(3^{20}=\left(3^2\right)^{10}=9^{10}\)

Vì 8 < 9 \(\Rightarrow8^{10}< 9^{10}\)

\(\Rightarrow2^{30}< 3^{20}\)

Answer 3

Ta có

2^30=(2^3)^10=8^10

3^20=(3^2)^10=9^10

Vì 8^10,9^10 nên 2^30<3^20

Answer 4

\(2^{30}=\)1073741824

\(3^{20}=\)3486784401

=>2^30<3^20

Answer 5

2^30= 2^3.10=8^10               *

3^20= 3^2.10=9^10                 **

(*), (**)=> 8^10 < 9^10 => 2^30<3^20