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Simplifying
2y2 + 5 = 77
Reorder the terms:
5 + 2y2 = 77
Solving
5 + 2y2 = 77
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 2y2 = 77 + -5
Combine like terms: 5 + -5 = 0
0 + 2y2 = 77 + -5
2y2 = 77 + -5
Combine like terms: 77 + -5 = 72
2y2 = 72
Divide each side by '2'.
y2 = 36
Simplifying
y2 = 36
Take the square root of each side:
y = {-6, 6}
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