Question

MÌNH CẦN GẤP

Answer 1

Ta có:
\(\left\{{}\begin{matrix}99^{20}=\left(99^2\right)^{10}\\9999^{10}\end{matrix}\right.\)

Vì \(99^2< 9999\)

⇒\(\left(99^2\right)^{10}< 9999^{10}\)

⇒\(99^{20}< 9999^{10}\)

Answer 2

Đề là gì bn nhỉ

Answer 3

so sánh

Answer 4

\(99^{20}=\left(99^2\right)^{10}< \left(99.101\right)^{10}=9999^{10}\)