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Reading Powers EXAMPLE 1 Power Repeated MultiplicationDescription in Words 4242 9393 y5y5 4 9 9 9 y y y y y 4 to the second power, or 4 squared 9 to the third power, or 9 cubed y to the fifth power

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Evaluating a Power EXAMPLE 2 5353 Evaluate five cubed. = 5 5 5 = 125 Write 5 as a factor 3 times. Multiply.

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GUIDED PRACTICE for Examples 1 and 2 1. 7 7 7 7 7 7 10 10 10 102. 3. w = 7676 = 10 4 = w 2w 2 Write the product as a power.

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EXAMPLE 2 = 6 6 6 = 216 Write 6 as a factor 3 times. Multiply. 6363 Describe the power in words and then evaluate. Six cubed. GUIDED PRACTICE for Examples 1 and 2 6363 4.

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EXAMPLE 2 = 32 Write 2 as a factor 5 times. Multiply. = 2 2 2 2 22525 Two to the fifth power Describe the power in words and then evaluate. GUIDED PRACTICE for Examples 1 and 2 2525 5.

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EXAMPLE 2 Thirteen squared. = 169 Write 13 as a factor 2 times. Multiply. = 13 1313 2 Describe the power in words and then evaluate. GUIDED PRACTICE for Examples 1 and 2 13 2 6.

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EXAMPLE 2 Three to the first power. = 3 Write 3 as a factor 1 times. Multiply. = 3 3 1 Describe the power in words and then evaluate. GUIDED PRACTICE for Examples 1 and 2 3 1 7.

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1.1 Variables and Expressions In the algebraic expression 4s, the letter s is called a variable. In algebra, variables are symbols used to represent unspecified.

1.1 Variables and Expressions In the algebraic expression 4s, the letter s is called a variable. In algebra, variables are symbols used to represent unspecified.

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