Big Ideas Math: Modeling Real Life, Grade 8
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Big Ideas Math: Modeling Real Life, Grade 8 View details
Cumulative Practice

Exercise 10 Page 369

What does the Negative Exponent Property say?

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To evaluate the given exponential expression, we will use the Negative Exponent Property.

Negative Exponent Property

a^(- n)=1/a^n, for every nonzero number a

Let's simplify the given expression using this property. We will start by rewriting a decimal as a fraction.

(- 2.5)^(- 2)
â–¼
Rewrite
(10 * (- 2.5)/10)^(- 2)
(- 25/10)^(- 2)
(- 25/10)^(- 2)
1/(- 2510)^2
1/( 2510)^2
1/25^210^2
1 * 10^2/25^2
10^2/25^2
100/625
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