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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 22 Page 378

Think of a number that when raised to the second power results in 4.84.

- 2.2 and 2.2

Practice makes perfect

We want to find both square roots of 4.84. ± sqrt(4.84)We need to think of a number that when raised to the second power results in 4.84. This number is 2.2.

(2.2)^2

Calculate power

4.84 ✓

With this information, we can say that the square roots of 4.84 are ±2.2, which can be also written as - 2.2 and 2.2. ± sqrt(4.84) = ± 2.2

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