x^2+4x-119=0

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Solution for x^2+4x-119=0 equation:


Simplifying
x2 + 4x + -119 = 0

Reorder the terms:
-119 + 4x + x2 = 0

Solving
-119 + 4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '119' to each side of the equation.
-119 + 4x + 119 + x2 = 0 + 119

Reorder the terms:
-119 + 119 + 4x + x2 = 0 + 119

Combine like terms: -119 + 119 = 0
0 + 4x + x2 = 0 + 119
4x + x2 = 0 + 119

Combine like terms: 0 + 119 = 119
4x + x2 = 119

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 119 + 4

Reorder the terms:
4 + 4x + x2 = 119 + 4

Combine like terms: 119 + 4 = 123
4 + 4x + x2 = 123

Factor a perfect square on the left side:
(x + 2)(x + 2) = 123

Calculate the square root of the right side: 11.090536506

Break this problem into two subproblems by setting 
(x + 2) equal to 11.090536506 and -11.090536506.

Subproblem 1

x + 2 = 11.090536506 Simplifying x + 2 = 11.090536506 Reorder the terms: 2 + x = 11.090536506 Solving 2 + x = 11.090536506 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 11.090536506 + -2 Combine like terms: 2 + -2 = 0 0 + x = 11.090536506 + -2 x = 11.090536506 + -2 Combine like terms: 11.090536506 + -2 = 9.090536506 x = 9.090536506 Simplifying x = 9.090536506

Subproblem 2

x + 2 = -11.090536506 Simplifying x + 2 = -11.090536506 Reorder the terms: 2 + x = -11.090536506 Solving 2 + x = -11.090536506 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -11.090536506 + -2 Combine like terms: 2 + -2 = 0 0 + x = -11.090536506 + -2 x = -11.090536506 + -2 Combine like terms: -11.090536506 + -2 = -13.090536506 x = -13.090536506 Simplifying x = -13.090536506

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.090536506, -13.090536506}

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