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81 as a power

How to write 81 as a power? How to write 1/81 as a power? How to write 81/256 as a power?

See the following examples.


Write 81 as a power

Problem: Write 81 as a power

Solution:

81 = 9 * 9 =
(3 * 3) * (3 * 3) =
32 * 32 =
32 + 2 = 34

Write 1/81 as a power

Problem: Write 1/81 as a power of -4

Solution:

1/81 = 1/34 =
3-4

Write 81/256 as a power

Problem: Write 81/256 as a power of 4

Solution:

The number 81

81 = 34

The number 256

256 = 4 * 64 =
2 * 2 * 26 =
22 * 26 =
22 + 6 = 28

See 64 as a power.

Hence

81/256 = 34/28 =
34/22 * 4 =
(3/22)4 =
(3/4)4