.5y^2-y-.027=0

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Solution for .5y^2-y-.027=0 equation:


Simplifying
0.5y2 + -1y + -0.027 = 0

Reorder the terms:
-0.027 + -1y + 0.5y2 = 0

Solving
-0.027 + -1y + 0.5y2 = 0

Solving for variable 'y'.

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

Divide each side by '0.5'.
-0.054 + -2y + y2 = 0

Move the constant term to the right:

Add '0.054' to each side of the equation.
-0.054 + -2y + 0.054 + y2 = 0 + 0.054

Reorder the terms:
-0.054 + 0.054 + -2y + y2 = 0 + 0.054

Combine like terms: -0.054 + 0.054 = 0.000
0.000 + -2y + y2 = 0 + 0.054
-2y + y2 = 0 + 0.054

Combine like terms: 0 + 0.054 = 0.054
-2y + y2 = 0.054

The y term is -2y.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2y + 1 + y2 = 0.054 + 1

Reorder the terms:
1 + -2y + y2 = 0.054 + 1

Combine like terms: 0.054 + 1 = 1.054
1 + -2y + y2 = 1.054

Factor a perfect square on the left side:
(y + -1)(y + -1) = 1.054

Calculate the square root of the right side: 1.026645021

Break this problem into two subproblems by setting 
(y + -1) equal to 1.026645021 and -1.026645021.

Subproblem 1

y + -1 = 1.026645021 Simplifying y + -1 = 1.026645021 Reorder the terms: -1 + y = 1.026645021 Solving -1 + y = 1.026645021 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + y = 1.026645021 + 1 Combine like terms: -1 + 1 = 0 0 + y = 1.026645021 + 1 y = 1.026645021 + 1 Combine like terms: 1.026645021 + 1 = 2.026645021 y = 2.026645021 Simplifying y = 2.026645021

Subproblem 2

y + -1 = -1.026645021 Simplifying y + -1 = -1.026645021 Reorder the terms: -1 + y = -1.026645021 Solving -1 + y = -1.026645021 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + y = -1.026645021 + 1 Combine like terms: -1 + 1 = 0 0 + y = -1.026645021 + 1 y = -1.026645021 + 1 Combine like terms: -1.026645021 + 1 = -0.026645021 y = -0.026645021 Simplifying y = -0.026645021

Solution

The solution to the problem is based on the solutions from the subproblems. y = {2.026645021, -0.026645021}

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