0=.005y^2-.002y+122

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Solution for 0=.005y^2-.002y+122 equation:


Simplifying
0 = 0.005y2 + -0.002y + 122

Reorder the terms:
0 = 122 + -0.002y + 0.005y2

Solving
0 = 122 + -0.002y + 0.005y2

Solving for variable 'y'.

Combine like terms: 0 + -122 = -122
-122 + 0.002y + -0.005y2 = 122 + -0.002y + 0.005y2 + -122 + 0.002y + -0.005y2

Reorder the terms:
-122 + 0.002y + -0.005y2 = 122 + -122 + -0.002y + 0.002y + 0.005y2 + -0.005y2

Combine like terms: 122 + -122 = 0
-122 + 0.002y + -0.005y2 = 0 + -0.002y + 0.002y + 0.005y2 + -0.005y2
-122 + 0.002y + -0.005y2 = -0.002y + 0.002y + 0.005y2 + -0.005y2

Combine like terms: -0.002y + 0.002y = 0.000
-122 + 0.002y + -0.005y2 = 0.000 + 0.005y2 + -0.005y2
-122 + 0.002y + -0.005y2 = 0.005y2 + -0.005y2

Combine like terms: 0.005y2 + -0.005y2 = 0.000
-122 + 0.002y + -0.005y2 = 0.000

Begin completing the square.  Divide all terms by
-0.005 the coefficient of the squared term: 

Divide each side by '-0.005'.
24400 + -0.4y + y2 = 0

Move the constant term to the right:

Add '-24400' to each side of the equation.
24400 + -0.4y + -24400 + y2 = 0 + -24400

Reorder the terms:
24400 + -24400 + -0.4y + y2 = 0 + -24400

Combine like terms: 24400 + -24400 = 0
0 + -0.4y + y2 = 0 + -24400
-0.4y + y2 = 0 + -24400

Combine like terms: 0 + -24400 = -24400
-0.4y + y2 = -24400

The y term is -0.4y.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4y + 0.04 + y2 = -24400 + 0.04

Reorder the terms:
0.04 + -0.4y + y2 = -24400 + 0.04

Combine like terms: -24400 + 0.04 = -24399.96
0.04 + -0.4y + y2 = -24399.96

Factor a perfect square on the left side:
(y + -0.2)(y + -0.2) = -24399.96

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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