Exercise 2 Page 374

We want to find both square roots of 100. We need to think of numbers that when raised to the second power result in 100. ?^2 = 100These numbers are 10 and - 10. We can now raise these numbers to the second power to check if they are square roots of 100. Let's start with 10!

10^2

CalcPow

Calculate power

100 ✓

With this information, we know that 10 is a square root of 100. Next, we can do the same for - 10.

(- 10)^2

CalcPow

Calculate power

100 ✓

Finally, we can say that the square roots of 100 are 10 and - 10.