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Simplifying
0 = 3y2 + -12
Reorder the terms:
0 = -12 + 3y2
Solving
0 = -12 + 3y2
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-3y2' to each side of the equation.
0 + -3y2 = -12 + 3y2 + -3y2
Remove the zero:
-3y2 = -12 + 3y2 + -3y2
Combine like terms: 3y2 + -3y2 = 0
-3y2 = -12 + 0
-3y2 = -12
Divide each side by '-3'.
y2 = 4
Simplifying
y2 = 4
Take the square root of each side:
y = {-2, 2}
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