What is 21 with an exponent of 2?

21 with an exponent of 2 means that 21 is the base (b) and 2 is the exponent (n).

Here is how you would display the number 21 with an exponent of 2 in mathematical terms:

bⁿ ⇒ 21²

Furthermore, bⁿ means to multiply b by b, n times.

So to calculate 21 with an exponent of 2, you can write 21, 2 times with a multiplication symbol between them like so:

21 · 21

When we multiply them together, we get the answer to 21 with an exponent of 2.

21² = 441

Numbers With Exponents Calculator
Enter another number with exponent that we can explain and calculate here:

What is 21 with an exponent of 3?
Want to learn more? Try the next exponent problem that we solved here!