Respuesta :

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

answer
{-12, 12}
Noah11012
Solve for y.

[tex]y^2 - 144 = 0[/tex]
[tex]y^2 = 144[/tex] <-- Add 144 to each side
[tex]y = 12[/tex] <-- 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.

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