.00000000000025=.00000000000000864+.000000000144y+.000006y^2

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Solution for .00000000000025=.00000000000000864+.000000000144y+.000006y^2 equation:


Simplifying
0.00000000000025 = 0.00000000000000864 + 0.000000000144y + 0.000006y2

Solving
0.00000000000025 = 0.00000000000000864 + 0.000000000144y + 0.000006y2

Solving for variable 'y'.

Combine like terms: 0.00000000000025 + -0.00000000000000864 = 0.00000000000024136
0.00000000000024136 + -0.000000000144y + -0.000006y2 = 0.00000000000000864 + 0.000000000144y + 0.000006y2 + -0.00000000000000864 + -0.000000000144y + -0.000006y2

Reorder the terms:
0.00000000000024136 + -0.000000000144y + -0.000006y2 = 0.00000000000000864 + -0.00000000000000864 + 0.000000000144y + -0.000000000144y + 0.000006y2 + -0.000006y2

Combine like terms: 0.00000000000000864 + -0.00000000000000864 = 0.00000000000000000
0.00000000000024136 + -0.000000000144y + -0.000006y2 = 0.00000000000000000 + 0.000000000144y + -0.000000000144y + 0.000006y2 + -0.000006y2
0.00000000000024136 + -0.000000000144y + -0.000006y2 = 0.000000000144y + -0.000000000144y + 0.000006y2 + -0.000006y2

Combine like terms: 0.000000000144y + -0.000000000144y = 0.000000000000
0.00000000000024136 + -0.000000000144y + -0.000006y2 = 0.000000000000 + 0.000006y2 + -0.000006y2
0.00000000000024136 + -0.000000000144y + -0.000006y2 = 0.000006y2 + -0.000006y2

Combine like terms: 0.000006y2 + -0.000006y2 = 0.000000
0.00000000000024136 + -0.000000000144y + -0.000006y2 = 0.000000

Begin completing the square.  Divide all terms by
-0.000006 the coefficient of the squared term: 

Divide each side by '-0.000006'.
-0.00000004022666667 + 0.000024y + y2 = 0

Move the constant term to the right:

Add '0.00000004022666667' to each side of the equation.
-0.00000004022666667 + 0.000024y + 0.00000004022666667 + y2 = 0 + 0.00000004022666667

Reorder the terms:
-0.00000004022666667 + 0.00000004022666667 + 0.000024y + y2 = 0 + 0.00000004022666667

Combine like terms: -0.00000004022666667 + 0.00000004022666667 = 0.00000000000000000
0.00000000000000000 + 0.000024y + y2 = 0 + 0.00000004022666667
0.000024y + y2 = 0 + 0.00000004022666667

Combine like terms: 0 + 0.00000004022666667 = 0.00000004022666667
0.000024y + y2 = 0.00000004022666667

The y term is 0.000024y.  Take half its coefficient (0.000012).
Square it (0.000000000144) and add it to both sides.

Add '0.000000000144' to each side of the equation.
0.000024y + 0.000000000144 + y2 = 0.00000004022666667 + 0.000000000144

Reorder the terms:
0.000000000144 + 0.000024y + y2 = 0.00000004022666667 + 0.000000000144

Combine like terms: 0.00000004022666667 + 0.000000000144 = 0.00000004037066667
0.000000000144 + 0.000024y + y2 = 0.00000004037066667

Factor a perfect square on the left side:
(y + 0.000012)(y + 0.000012) = 0.00000004037066667

Calculate the square root of the right side: 0.000200925

Break this problem into two subproblems by setting 
(y + 0.000012) equal to 0.000200925 and -0.000200925.

Subproblem 1

y + 0.000012 = 0.000200925 Simplifying y + 0.000012 = 0.000200925 Reorder the terms: 0.000012 + y = 0.000200925 Solving 0.000012 + y = 0.000200925 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.000012' to each side of the equation. 0.000012 + -0.000012 + y = 0.000200925 + -0.000012 Combine like terms: 0.000012 + -0.000012 = 0.000000 0.000000 + y = 0.000200925 + -0.000012 y = 0.000200925 + -0.000012 Combine like terms: 0.000200925 + -0.000012 = 0.000188925 y = 0.000188925 Simplifying y = 0.000188925

Subproblem 2

y + 0.000012 = -0.000200925 Simplifying y + 0.000012 = -0.000200925 Reorder the terms: 0.000012 + y = -0.000200925 Solving 0.000012 + y = -0.000200925 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.000012' to each side of the equation. 0.000012 + -0.000012 + y = -0.000200925 + -0.000012 Combine like terms: 0.000012 + -0.000012 = 0.000000 0.000000 + y = -0.000200925 + -0.000012 y = -0.000200925 + -0.000012 Combine like terms: -0.000200925 + -0.000012 = -0.000212925 y = -0.000212925 Simplifying y = -0.000212925

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.000188925, -0.000212925}

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