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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 376

Think of a number that when raised to the second power results in 1.44.

- 1.2 and 1.2

Practice makes perfect

We want to find both square roots of 1.44. ± sqrt(1.44)We need to think of a number that when raised to the second power results in 1.44. This number is 1.2.

(1.2)^2

Calculate power

1.44 ✓

With this information, we can say that the square roots of 1.44 are ±1.2, which can be also written as - 1.2 and 1.2. ± sqrt(1.44) = ± 1.2

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