1.1.4 Powers and Exponents (continued) Example 2 Evaluating Powers In a power such as a b , the base is a and the exponent is b , which indicates that a is used as a factor b times.

Example 3 Writing Powers

There are many ways to write a number as an equivalent numeric expression using operations. For example, 16 can be written as 13 + 3 or 8 · 2. Some numbers can be written as a power. For example, 16 can be written as 4 2 because 16 = 4 · 4 = 4 2 .

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