3y^2-2y-504=0

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Solution for 3y^2-2y-504=0 equation:


Simplifying
3y2 + -2y + -504 = 0

Reorder the terms:
-504 + -2y + 3y2 = 0

Solving
-504 + -2y + 3y2 = 0

Solving for variable 'y'.

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

Divide each side by '3'.
-168 + -0.6666666667y + y2 = 0

Move the constant term to the right:

Add '168' to each side of the equation.
-168 + -0.6666666667y + 168 + y2 = 0 + 168

Reorder the terms:
-168 + 168 + -0.6666666667y + y2 = 0 + 168

Combine like terms: -168 + 168 = 0
0 + -0.6666666667y + y2 = 0 + 168
-0.6666666667y + y2 = 0 + 168

Combine like terms: 0 + 168 = 168
-0.6666666667y + y2 = 168

The y term is -0.6666666667y.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667y + 0.1111111112 + y2 = 168 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667y + y2 = 168 + 0.1111111112

Combine like terms: 168 + 0.1111111112 = 168.1111111112
0.1111111112 + -0.6666666667y + y2 = 168.1111111112

Factor a perfect square on the left side:
(y + -0.3333333334)(y + -0.3333333334) = 168.1111111112

Calculate the square root of the right side: 12.965766893

Break this problem into two subproblems by setting 
(y + -0.3333333334) equal to 12.965766893 and -12.965766893.

Subproblem 1

y + -0.3333333334 = 12.965766893 Simplifying y + -0.3333333334 = 12.965766893 Reorder the terms: -0.3333333334 + y = 12.965766893 Solving -0.3333333334 + y = 12.965766893 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + y = 12.965766893 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + y = 12.965766893 + 0.3333333334 y = 12.965766893 + 0.3333333334 Combine like terms: 12.965766893 + 0.3333333334 = 13.2991002264 y = 13.2991002264 Simplifying y = 13.2991002264

Subproblem 2

y + -0.3333333334 = -12.965766893 Simplifying y + -0.3333333334 = -12.965766893 Reorder the terms: -0.3333333334 + y = -12.965766893 Solving -0.3333333334 + y = -12.965766893 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + y = -12.965766893 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + y = -12.965766893 + 0.3333333334 y = -12.965766893 + 0.3333333334 Combine like terms: -12.965766893 + 0.3333333334 = -12.6324335596 y = -12.6324335596 Simplifying y = -12.6324335596

Solution

The solution to the problem is based on the solutions from the subproblems. y = {13.2991002264, -12.6324335596}

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