Question

1. SO SÁNH

71⁵ VÀ 17²⁰

Answer 1

\(17^{20}=\left(17^4\right)^5\)

\(17^4>71\Leftrightarrow71^5< 17^{20}=\left(17^4\right)^5\)

Answer 2

\(17^{20}=\left(17^4\right)^5=83521^5\)

Ta có: \(83521>71\)

\(\Rightarrow83521^5>71^5\)

\(\Rightarrow17^{20}>71^5\)