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Simplifying
-5y2 + 4 = -12
Reorder the terms:
4 + -5y2 = -12
Solving
4 + -5y2 = -12
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-4' to each side of the equation.
4 + -4 + -5y2 = -12 + -4
Combine like terms: 4 + -4 = 0
0 + -5y2 = -12 + -4
-5y2 = -12 + -4
Combine like terms: -12 + -4 = -16
-5y2 = -16
Divide each side by '-5'.
y2 = 3.2
Simplifying
y2 = 3.2
Take the square root of each side:
y = {-1.788854382, 1.788854382}
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