Question

So sánh:

63⁷ và 16¹²

Answer 1

Ta có:

\(63^7< 64^7=\left(2^5\right)^7=2^{35}< 2^{48}\)

\(=\left(2^4\right)^{12}=16^{12}\)

\(\Rightarrow63^7< 16^{12}\)

Answer 2

Ta có : 63⁷ < 64⁷ = ( 4³ )⁷ = 4²¹ < 4²⁴

16¹² = ( 4² )¹² = 4²⁴

=> 63⁷ < 16¹²