y^2-10y-116=0

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Solution for y^2-10y-116=0 equation:


Simplifying
y2 + -10y + -116 = 0

Reorder the terms:
-116 + -10y + y2 = 0

Solving
-116 + -10y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '116' to each side of the equation.
-116 + -10y + 116 + y2 = 0 + 116

Reorder the terms:
-116 + 116 + -10y + y2 = 0 + 116

Combine like terms: -116 + 116 = 0
0 + -10y + y2 = 0 + 116
-10y + y2 = 0 + 116

Combine like terms: 0 + 116 = 116
-10y + y2 = 116

The y term is -10y.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10y + 25 + y2 = 116 + 25

Reorder the terms:
25 + -10y + y2 = 116 + 25

Combine like terms: 116 + 25 = 141
25 + -10y + y2 = 141

Factor a perfect square on the left side:
(y + -5)(y + -5) = 141

Calculate the square root of the right side: 11.874342087

Break this problem into two subproblems by setting 
(y + -5) equal to 11.874342087 and -11.874342087.

Subproblem 1

y + -5 = 11.874342087 Simplifying y + -5 = 11.874342087 Reorder the terms: -5 + y = 11.874342087 Solving -5 + y = 11.874342087 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + y = 11.874342087 + 5 Combine like terms: -5 + 5 = 0 0 + y = 11.874342087 + 5 y = 11.874342087 + 5 Combine like terms: 11.874342087 + 5 = 16.874342087 y = 16.874342087 Simplifying y = 16.874342087

Subproblem 2

y + -5 = -11.874342087 Simplifying y + -5 = -11.874342087 Reorder the terms: -5 + y = -11.874342087 Solving -5 + y = -11.874342087 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + y = -11.874342087 + 5 Combine like terms: -5 + 5 = 0 0 + y = -11.874342087 + 5 y = -11.874342087 + 5 Combine like terms: -11.874342087 + 5 = -6.874342087 y = -6.874342087 Simplifying y = -6.874342087

Solution

The solution to the problem is based on the solutions from the subproblems. y = {16.874342087, -6.874342087}

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