Question

What are the solutions to the equation y2 - 1 = 24?

-5 and 5
-6 and 6
-1 and 1
-4 and 4

Answer 1

-5 and 5

Explanation:

y^2 - 1 = 24

y^2 = 25

5^2 and (-5)^2 are both 25