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Big Ideas Math: Modeling Real Life, Grade 8

BI

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

4. Zero and Negative Exponents

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Exercise 25 Page 342

What does the definition of a negative exponent say?

a^7/64

Practice makes perfect

To simplify the given exponential expression, we will use the definition of a negative exponent.

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

Let's simplify the given expression using this definition.

8^(- 2)* a^7

NegExponentToFrac

a^(- m)=1/a^m

1/8^2* a^7

MoveRightFacToNumOne

1/b* a = a/b

a^7/8^2

Calculate power

a^7/64

Subchapter links

Try It p.338-339

Self-Assessment for Concepts & Skills p.339

Self-Assessment for Problem Solving p.340

Review & Refresh p.341

Concepts, Skills, & Problem Solving p.341-342