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Simplifying
-5y2 + 125 = 0
Reorder the terms:
125 + -5y2 = 0
Solving
125 + -5y2 = 0
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-125' to each side of the equation.
125 + -125 + -5y2 = 0 + -125
Combine like terms: 125 + -125 = 0
0 + -5y2 = 0 + -125
-5y2 = 0 + -125
Combine like terms: 0 + -125 = -125
-5y2 = -125
Divide each side by '-5'.
y2 = 25
Simplifying
y2 = 25
Take the square root of each side:
y = {-5, 5}
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