Question

The solution set for the equation y 2 - 144 = 0 is {-12} {-12, 12} {72}

Answer 1

Solve for y.


`y^2 - 144 = 0`

`y^2 = 144` <-- Add 144 to each side

`y = 12` <-- Take the square root of both sides

Because of the fact that squaring a negative number will result in a positive number, both 12 and -12 are in the solution set.

So, {12, -12} is the solution set.

Answer 2

y^2 - 144 = 0
y^2 = 144
y = -12 and y = 12

answer
{-12, 12}