### Home > CCA > Chapter 10 > Lesson 10.2.5 > Problem 10-81

10-81.

Use square roots to find both solutions to each equation. Homework Help ✎

*x*^{2}− 81 = 0*x*^{2}− 37 = 0*x*^{2}+ 49 = 02

*x*^{2}+ 10 = 0

Add 81 to both sides.

Square root both sides.

This equation has *x*^{2}, so you should be looking for two possible solutions.

*x* = ±9

Use the same method as part (a). Is 37 a perfect square?

Use the same method as parts (a) and (b).

One method would be to start by dividing the equation by 2.