2y^2-6=122

Solution for 2y^2-6=122 equation:

Simplifying
2y2 + -6 = 122

Reorder the terms:
-6 + 2y2 = 122

Solving
-6 + 2y2 = 122

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '6' to each side of the equation.
-6 + 6 + 2y2 = 122 + 6

Combine like terms: -6 + 6 = 0
0 + 2y2 = 122 + 6
2y2 = 122 + 6

Combine like terms: 122 + 6 = 128
2y2 = 128

Divide each side by '2'.
y2 = 64

Simplifying
y2 = 64

Take the square root of each side:
y = {-8, 8}