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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 15 Page 378

Think of a number that when raised to the second power results in 196.

- 14 and 14

Practice makes perfect

We want to find both square roots of 196. ± sqrt(196)We need to think of a number that when raised to the second power results in 196. This number is 14.

14^2

Calculate power

196 ✓

With this information, we can say that the square roots of 196 are ±14, which can be also written as - 14 and 14. ± sqrt(196) = ± 14

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