Question

So sánh : 3^200 và 2^300 , 

5^200 và 2^500 

Answer 1

a.

\(3^{200}=\left(3^2\right)^{100}=9^{100}>8^{100}=\left(2^3\right)^{100}=2^{300}\)

Vậy \(3^{200}>2^{300}\)

b.

\(5^{200}=\left(5^2\right)^{100}=25^{100}< 32^{100}=\left(2^5\right)^{100}=2^{500}\)

Vậy \(5^{200}< 2^{500}\)

Answer 2

Ta có : \(3^{200}=3^{2.100}=\left(3^2\right)^{100}=9^{100}\)

\(2^{300}=2^{3.100}=\left(2^3\right)^{100}=8^{100}\)

\(\Rightarrow9^{100}>8^{100}\)

\(\Rightarrow3^{200}>2^{300}\)

Answer 3

Ta có : \(5^{200}=5^{2.100}=\left(5^2\right)^{100}=25^{100}\)

\(2^{500}=2^{5.100}=\left(2^5\right)^{100}=32^{100}\)

\(\Rightarrow25^{100}< 32^{100}\)

\(\Rightarrow5^{200}< 2^{500}\)