Exercise 27 Page 77

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.

With this information, we can say that the square roots of 1.44 are ± 1.2. ± sqrt(1.44) = ± 1.2