Best Answer

81 = 8.1e+1

81 is a type of number known as a perfect square since it is 9x9.

So we could write it as 92 . We can also note that 9=32 . So we can write

81=34 . We can find this by writing (32 )2 and noting that we multiply exponents when we raise an exponent to a power.

Q: What is the exponential notation for 81?

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81 = 92 or 8.1 × 101

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81 can be written as 8.10 Ã— 101 in exponential notation.

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