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Simplifying
0 = 4y2 + -31
Reorder the terms:
0 = -31 + 4y2
Solving
0 = -31 + 4y2
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-4y2' to each side of the equation.
0 + -4y2 = -31 + 4y2 + -4y2
Remove the zero:
-4y2 = -31 + 4y2 + -4y2
Combine like terms: 4y2 + -4y2 = 0
-4y2 = -31 + 0
-4y2 = -31
Divide each side by '-4'.
y2 = 7.75
Simplifying
y2 = 7.75
Take the square root of each side:
y = {-2.783882181, 2.783882181}
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