6y^2+8y-3=6y

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Solution for 6y^2+8y-3=6y equation:


Simplifying
6y2 + 8y + -3 = 6y

Reorder the terms:
-3 + 8y + 6y2 = 6y

Solving
-3 + 8y + 6y2 = 6y

Solving for variable 'y'.

Reorder the terms:
-3 + 8y + -6y + 6y2 = 6y + -6y

Combine like terms: 8y + -6y = 2y
-3 + 2y + 6y2 = 6y + -6y

Combine like terms: 6y + -6y = 0
-3 + 2y + 6y2 = 0

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

Divide each side by '6'.
-0.5 + 0.3333333333y + y2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + 0.3333333333y + 0.5 + y2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + 0.3333333333y + y2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 0.3333333333y + y2 = 0 + 0.5
0.3333333333y + y2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
0.3333333333y + y2 = 0.5

The y term is 0.3333333333y.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333y + 0.02777777779 + y2 = 0.5 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333y + y2 = 0.5 + 0.02777777779

Combine like terms: 0.5 + 0.02777777779 = 0.52777777779
0.02777777779 + 0.3333333333y + y2 = 0.52777777779

Factor a perfect square on the left side:
(y + 0.1666666667)(y + 0.1666666667) = 0.52777777779

Calculate the square root of the right side: 0.726483157

Break this problem into two subproblems by setting 
(y + 0.1666666667) equal to 0.726483157 and -0.726483157.

Subproblem 1

y + 0.1666666667 = 0.726483157 Simplifying y + 0.1666666667 = 0.726483157 Reorder the terms: 0.1666666667 + y = 0.726483157 Solving 0.1666666667 + y = 0.726483157 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + y = 0.726483157 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + y = 0.726483157 + -0.1666666667 y = 0.726483157 + -0.1666666667 Combine like terms: 0.726483157 + -0.1666666667 = 0.5598164903 y = 0.5598164903 Simplifying y = 0.5598164903

Subproblem 2

y + 0.1666666667 = -0.726483157 Simplifying y + 0.1666666667 = -0.726483157 Reorder the terms: 0.1666666667 + y = -0.726483157 Solving 0.1666666667 + y = -0.726483157 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + y = -0.726483157 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + y = -0.726483157 + -0.1666666667 y = -0.726483157 + -0.1666666667 Combine like terms: -0.726483157 + -0.1666666667 = -0.8931498237 y = -0.8931498237 Simplifying y = -0.8931498237

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.5598164903, -0.8931498237}

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