y^2+y-112=0

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Solution for y^2+y-112=0 equation:


Simplifying
y2 + y + -112 = 0

Reorder the terms:
-112 + y + y2 = 0

Solving
-112 + y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '112' to each side of the equation.
-112 + y + 112 + y2 = 0 + 112

Reorder the terms:
-112 + 112 + y + y2 = 0 + 112

Combine like terms: -112 + 112 = 0
0 + y + y2 = 0 + 112
y + y2 = 0 + 112

Combine like terms: 0 + 112 = 112
y + y2 = 112

The y term is y.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
y + 0.25 + y2 = 112 + 0.25

Reorder the terms:
0.25 + y + y2 = 112 + 0.25

Combine like terms: 112 + 0.25 = 112.25
0.25 + y + y2 = 112.25

Factor a perfect square on the left side:
(y + 0.5)(y + 0.5) = 112.25

Calculate the square root of the right side: 10.59481005

Break this problem into two subproblems by setting 
(y + 0.5) equal to 10.59481005 and -10.59481005.

Subproblem 1

y + 0.5 = 10.59481005 Simplifying y + 0.5 = 10.59481005 Reorder the terms: 0.5 + y = 10.59481005 Solving 0.5 + y = 10.59481005 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = 10.59481005 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = 10.59481005 + -0.5 y = 10.59481005 + -0.5 Combine like terms: 10.59481005 + -0.5 = 10.09481005 y = 10.09481005 Simplifying y = 10.09481005

Subproblem 2

y + 0.5 = -10.59481005 Simplifying y + 0.5 = -10.59481005 Reorder the terms: 0.5 + y = -10.59481005 Solving 0.5 + y = -10.59481005 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = -10.59481005 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = -10.59481005 + -0.5 y = -10.59481005 + -0.5 Combine like terms: -10.59481005 + -0.5 = -11.09481005 y = -11.09481005 Simplifying y = -11.09481005

Solution

The solution to the problem is based on the solutions from the subproblems. y = {10.09481005, -11.09481005}

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