Question

so sánh 9¹² và 26⁸

Answer 1

Ta có

\(26^8< 27^8=\left(3^3\right)^8=3^{24}\)

\(9^{12}=\left(3^2\right)^{12}=3^{24}\)

\(\Rightarrow26^8< 9^{12}\)

Answer 2

9¹²=(3²)¹²=3²⁴=(3³)⁸=27²⁴

Vì 27²⁴>26⁸ nên 9¹²>26⁸

 

Answer 3

\(9^{12}=\left(3^2\right)^{12}=3^{24}=\left(3^3\right)^{ }=27^8>26^8\)

\(\Rightarrow9^{12}>26^8\)

Answer 4

9¹² = (3²)¹² = 3²⁴ = (3³)⁸ = 27⁸

Do 27⁸ > 26⁸

Nên: 9¹² > 26⁸