How do you write 81 as power?

Answer 1

First divide 3 into 81

81 ÷ 3 = 27 so 81 = 3 × 27

Next divide 3 into 27

27 ÷ 3 = 9 so 27 = 3 × 9 and hence 81 =3 × 27 = 3 × 3 × 9

But 9 = 3 × 3 and thus

81 = 3 × 3 × 9 = 3 × 3 × 3 × 3 = 34

Answer 2

81=92

Answer 3

9^2

Answer 4

9²