Question

viết các số sau dưới dạng aⁿ

a) 2.4.16.32.2⁴

b) 9.3³.\(\dfrac{1}{81}\).27

Answer 1

a/\(2.4.16.32.2^4=2.2^2.2^4.2^5.2^4=2^{16}\)

b/\(9.3^3.\dfrac{1}{81}=3^2.3^3.3^{-4}=3\)

Answer 2

a) \(2\cdot4\cdot16\cdot32\cdot2^4\)

\(=2^1\cdot2^2\cdot2^4\cdot2^5\cdot2^4\)

\(=2^{16}\)

b) \(9\cdot3^3\cdot\dfrac{1}{81}\cdot27\)

\(=3^2\cdot3^3\cdot3^{-4}\cdot3^3\)

\(=3^4\)