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Big Ideas Math: Modeling Real Life, Grade 8

BI

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

1. Finding Square Roots

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Exercise 18 Page 378

Think of a number that when raised to the second power results in 116.

1/4

Practice makes perfect

We want to find the positive square root of 116. sqrt(1/16)We need to think of a number that when raised to the second power results in 116. By using the Power of a Quotient Law, we can see that this number is 14.

(1/4)^2

(a/b)^m=a^m/b^m

1^2/4^2

Calculate power

1/16 ✓

With this information, we can say that the positive square root of 116 is 14. sqrt(1/16) = 1/4

Subchapter links

Try It p.374-376

Self-Assessment for Concepts & Skills p.376

Self-Assessment for Problem Solving p.377

Review & Refresh p.378

Concepts, Skills, & Problem Solving p.378-380