Big Ideas Math: Modeling Real Life, Grade 8
BI
Big Ideas Math: Modeling Real Life, Grade 8 View details
1. Finding Square Roots
Continue to next subchapter

Exercise 10 Page 378

Think of a number that when raised to the second power results in 9.

3 and - 3

Practice makes perfect
We want to find both square roots of 9. ± sqrt(9)We need to think of a number that when raised to the second power results in 9. This number is 3.
3^2
9 âś“
With this information, we can say that the square roots of 9 are ± 3, which can be also written as 3 and - 3. ± sqrt(9) = ± 3