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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 21 Page 378

Think of a number that when raised to the second power results in 9100.

- 3/10

Practice makes perfect

We want to find the negative square root of 9100. - sqrt(9/100)We need to think of a number that when raised to the second power results in 9100. By using the Power of a Quotient Law, we can see that this number is 310.

(3/10)^2

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

3^2/10^2

Calculate power

9/100 ✓

With this information, we can say that the negative square root of 9100 is - 310. - sqrt(9/100) = - 3/10

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