2y^2-66-72=0

Solution for 2y^2-66-72=0 equation:

Simplifying
2y2 + -66 + -72 = 0

Reorder the terms:
-66 + -72 + 2y2 = 0

Combine like terms: -66 + -72 = -138
-138 + 2y2 = 0

Solving
-138 + 2y2 = 0

Solving for variable 'y'.

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

Add '138' to each side of the equation.
-138 + 138 + 2y2 = 0 + 138

Combine like terms: -138 + 138 = 0
0 + 2y2 = 0 + 138
2y2 = 0 + 138

Combine like terms: 0 + 138 = 138
2y2 = 138

Divide each side by '2'.
y2 = 69

Simplifying
y2 = 69

Take the square root of each side:
y = {-8.306623863, 8.306623863}