The base of an exponent is a number that is raised to a certain power.
In 15^{2}, 15 is the base and 2 is the exponent. You can read 15^{2} as 15 raised to the power of 2.
To get an answer for 15^{2}, you can just multiply 15 by itself.
15^{2} = 15 × 15
Other examples
In 4^{6} , 4 is the base
In 1^{3} , 1 is the base
In (-9)^{6} , -9 is the base
In -9^{6} , -9 is not the base. 9 is the base
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