Use square roots to find both solutions to each equation. Homework Help ✎
x2 − 81 = 0
x2 − 37 = 0
x2 + 49 = 0
2x2 + 10 = 0
Add 81 to both sides.
Square root both sides.
This equation has x2, 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.