Question

What are the solutions to the equation y2 – 1 = 48?

–5 and 5


–4 and 4


–7 and 7


–6 and 6

1 points
Question 5

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


–5 and 5


–4 and 4


–1 and 1


–6 and 6

Answer 1

`{y}^(2) - 1 = 48 \\ {y}^(2) = 49 \\ y = √(49) \\ y = - 7 \: or \: 7`


`{y}^(2) - 1 = 24 \\ {y}^(2) = 25 \\ y = √(25) \\ y = - 5 \: or \: 5`

Hope this helps. - M