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Simplifying
20y2 + -125 = 0
Reorder the terms:
-125 + 20y2 = 0
Solving
-125 + 20y2 = 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 + 20y2 = 0 + 125
Combine like terms: -125 + 125 = 0
0 + 20y2 = 0 + 125
20y2 = 0 + 125
Combine like terms: 0 + 125 = 125
20y2 = 125
Divide each side by '20'.
y2 = 6.25
Simplifying
y2 = 6.25
Take the square root of each side:
y = {-2.5, 2.5}
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