Question

so sánh

7 mũ 7 và 49 mũ 3

Answer 1

\(49^3=\left(7^2\right)^3=7^6< 7^7\)

Answer 2

Ta có: \(49^3=\left(7.7\right)^3=7^3.7^3=7^6\)

Vậy: \(7^7>7^6\) hay \(7^7>49^3\)

Answer 3

Ta có: \(49^3=\left(7^2\right)^3=7^6\)

Vì \(7^7>7^6\Rightarrow7^7>49^3\)