x^2+3x-119=0

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Solution for x^2+3x-119=0 equation:


Simplifying
x2 + 3x + -119 = 0

Reorder the terms:
-119 + 3x + x2 = 0

Solving
-119 + 3x + 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 + 3x + 119 + x2 = 0 + 119

Reorder the terms:
-119 + 119 + 3x + x2 = 0 + 119

Combine like terms: -119 + 119 = 0
0 + 3x + x2 = 0 + 119
3x + x2 = 0 + 119

Combine like terms: 0 + 119 = 119
3x + x2 = 119

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 119 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 119 + 2.25

Combine like terms: 119 + 2.25 = 121.25
2.25 + 3x + x2 = 121.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 121.25

Calculate the square root of the right side: 11.011357773

Break this problem into two subproblems by setting 
(x + 1.5) equal to 11.011357773 and -11.011357773.

Subproblem 1

x + 1.5 = 11.011357773 Simplifying x + 1.5 = 11.011357773 Reorder the terms: 1.5 + x = 11.011357773 Solving 1.5 + x = 11.011357773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 11.011357773 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 11.011357773 + -1.5 x = 11.011357773 + -1.5 Combine like terms: 11.011357773 + -1.5 = 9.511357773 x = 9.511357773 Simplifying x = 9.511357773

Subproblem 2

x + 1.5 = -11.011357773 Simplifying x + 1.5 = -11.011357773 Reorder the terms: 1.5 + x = -11.011357773 Solving 1.5 + x = -11.011357773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -11.011357773 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -11.011357773 + -1.5 x = -11.011357773 + -1.5 Combine like terms: -11.011357773 + -1.5 = -12.511357773 x = -12.511357773 Simplifying x = -12.511357773

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.511357773, -12.511357773}

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