-8y^2+2-y=0

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Solution for -8y^2+2-y=0 equation:


Simplifying
-8y2 + 2 + -1y = 0

Reorder the terms:
2 + -1y + -8y2 = 0

Solving
2 + -1y + -8y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-0.25 + 0.125y + y2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + 0.125y + 0.25 + y2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + 0.125y + y2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + 0.125y + y2 = 0 + 0.25
0.125y + y2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
0.125y + y2 = 0.25

The y term is 0.125y.  Take half its coefficient (0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
0.125y + 0.00390625 + y2 = 0.25 + 0.00390625

Reorder the terms:
0.00390625 + 0.125y + y2 = 0.25 + 0.00390625

Combine like terms: 0.25 + 0.00390625 = 0.25390625
0.00390625 + 0.125y + y2 = 0.25390625

Factor a perfect square on the left side:
(y + 0.0625)(y + 0.0625) = 0.25390625

Calculate the square root of the right side: 0.503891109

Break this problem into two subproblems by setting 
(y + 0.0625) equal to 0.503891109 and -0.503891109.

Subproblem 1

y + 0.0625 = 0.503891109 Simplifying y + 0.0625 = 0.503891109 Reorder the terms: 0.0625 + y = 0.503891109 Solving 0.0625 + y = 0.503891109 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + y = 0.503891109 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + y = 0.503891109 + -0.0625 y = 0.503891109 + -0.0625 Combine like terms: 0.503891109 + -0.0625 = 0.441391109 y = 0.441391109 Simplifying y = 0.441391109

Subproblem 2

y + 0.0625 = -0.503891109 Simplifying y + 0.0625 = -0.503891109 Reorder the terms: 0.0625 + y = -0.503891109 Solving 0.0625 + y = -0.503891109 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + y = -0.503891109 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + y = -0.503891109 + -0.0625 y = -0.503891109 + -0.0625 Combine like terms: -0.503891109 + -0.0625 = -0.566391109 y = -0.566391109 Simplifying y = -0.566391109

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.441391109, -0.566391109}

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