-12y^2+121y+1=0

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Solution for -12y^2+121y+1=0 equation:


Simplifying
-12y2 + 121y + 1 = 0

Reorder the terms:
1 + 121y + -12y2 = 0

Solving
1 + 121y + -12y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-12 the coefficient of the squared term: 

Divide each side by '-12'.
-0.08333333333 + -10.08333333y + y2 = 0

Move the constant term to the right:

Add '0.08333333333' to each side of the equation.
-0.08333333333 + -10.08333333y + 0.08333333333 + y2 = 0 + 0.08333333333

Reorder the terms:
-0.08333333333 + 0.08333333333 + -10.08333333y + y2 = 0 + 0.08333333333

Combine like terms: -0.08333333333 + 0.08333333333 = 0.00000000000
0.00000000000 + -10.08333333y + y2 = 0 + 0.08333333333
-10.08333333y + y2 = 0 + 0.08333333333

Combine like terms: 0 + 0.08333333333 = 0.08333333333
-10.08333333y + y2 = 0.08333333333

The y term is -10.08333333y.  Take half its coefficient (-5.041666665).
Square it (25.41840276) and add it to both sides.

Add '25.41840276' to each side of the equation.
-10.08333333y + 25.41840276 + y2 = 0.08333333333 + 25.41840276

Reorder the terms:
25.41840276 + -10.08333333y + y2 = 0.08333333333 + 25.41840276

Combine like terms: 0.08333333333 + 25.41840276 = 25.50173609333
25.41840276 + -10.08333333y + y2 = 25.50173609333

Factor a perfect square on the left side:
(y + -5.041666665)(y + -5.041666665) = 25.50173609333

Calculate the square root of the right side: 5.049924365

Break this problem into two subproblems by setting 
(y + -5.041666665) equal to 5.049924365 and -5.049924365.

Subproblem 1

y + -5.041666665 = 5.049924365 Simplifying y + -5.041666665 = 5.049924365 Reorder the terms: -5.041666665 + y = 5.049924365 Solving -5.041666665 + y = 5.049924365 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '5.041666665' to each side of the equation. -5.041666665 + 5.041666665 + y = 5.049924365 + 5.041666665 Combine like terms: -5.041666665 + 5.041666665 = 0.000000000 0.000000000 + y = 5.049924365 + 5.041666665 y = 5.049924365 + 5.041666665 Combine like terms: 5.049924365 + 5.041666665 = 10.09159103 y = 10.09159103 Simplifying y = 10.09159103

Subproblem 2

y + -5.041666665 = -5.049924365 Simplifying y + -5.041666665 = -5.049924365 Reorder the terms: -5.041666665 + y = -5.049924365 Solving -5.041666665 + y = -5.049924365 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '5.041666665' to each side of the equation. -5.041666665 + 5.041666665 + y = -5.049924365 + 5.041666665 Combine like terms: -5.041666665 + 5.041666665 = 0.000000000 0.000000000 + y = -5.049924365 + 5.041666665 y = -5.049924365 + 5.041666665 Combine like terms: -5.049924365 + 5.041666665 = -0.0082577 y = -0.0082577 Simplifying y = -0.0082577

Solution

The solution to the problem is based on the solutions from the subproblems. y = {10.09159103, -0.0082577}

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