Raising a number to the power of 2 is also called squaring a number, which means you must multiply the number by itself. The result equals the number squared. The power of 2 is designated by an exponent of 2. For example, in the expression 5^2, the number 2 is the exponent and the number 5 is the base, which is the number being raised to a power. The exponent tells you how many times to use the base as a product. In the expression 5^2, use the base 5 as two products, which equals 5 x 5, or 5 squared.

Determine a number to be raised to the power of 2. For this example, use the number 3.

Write the expression with the base, 3, and the exponent, 2. This yields the expression 3^2.

Write out the expression without the exponent, using the base as two products  3 x 3.

Multiply 3 times 3, which equals 9. Therefore, 3 raised to the power of 2 equals 9.
Tips & Warnings
 When you raise a negative number to the power of 2, the result is a positive number, because two negative numbers multiplied together equal a positive number.
References
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