Big Ideas Math: Modeling Real Life, Grade 8
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Big Ideas Math: Modeling Real Life, Grade 8 View details
2. Product of Powers Property
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Exercise 8 Page 329

The exponent of a power tells us about the number of times we need to multiply the base by itself.

Repeated Multiplication Form: 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6
Power: 6^8

Practice makes perfect
The repeated multiplication form shows us the meaning of a power. A power represents a product of repeated, identical factors. The exponent tells us about the number of times we need to multiply the base by itself. a^n = a * a * ... * a * a_n We want to write the given expression in repeated multiplication form. The expression contains a power of a power, so we will rewrite the powers into the repeated multiplication form one at a time.

( 6^4 ) ^2 ⇔ 6^4 * 6^4_2 The resulting expression contains two powers. Let's rewrite both of them. 6^4 * 6^4 ⇕ 6 * 6 * 6 * 6_4 * 6 * 6 * 6 * 6_4 Now, we want to write the expression as a power. The product contains only identical factors, so we can join them all into one power. 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 6 appears 8 times The number of times the 6 appears in the product is an exponent of a power. We can finally write the power! 6^8 We can see that our result confirms the Power of a Power Property. This property states that to find the power of a power, we can multiply the exponents. This means that the result of (6^4)^2 is 6 raised to the power of 4 * 2= 8, which is 6^8.