x^2+5x-228=0

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Solution for x^2+5x-228=0 equation:


Simplifying
x2 + 5x + -228 = 0

Reorder the terms:
-228 + 5x + x2 = 0

Solving
-228 + 5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '228' to each side of the equation.
-228 + 5x + 228 + x2 = 0 + 228

Reorder the terms:
-228 + 228 + 5x + x2 = 0 + 228

Combine like terms: -228 + 228 = 0
0 + 5x + x2 = 0 + 228
5x + x2 = 0 + 228

Combine like terms: 0 + 228 = 228
5x + x2 = 228

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 228 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 228 + 6.25

Combine like terms: 228 + 6.25 = 234.25
6.25 + 5x + x2 = 234.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 234.25

Calculate the square root of the right side: 15.305227865

Break this problem into two subproblems by setting 
(x + 2.5) equal to 15.305227865 and -15.305227865.

Subproblem 1

x + 2.5 = 15.305227865 Simplifying x + 2.5 = 15.305227865 Reorder the terms: 2.5 + x = 15.305227865 Solving 2.5 + x = 15.305227865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 15.305227865 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 15.305227865 + -2.5 x = 15.305227865 + -2.5 Combine like terms: 15.305227865 + -2.5 = 12.805227865 x = 12.805227865 Simplifying x = 12.805227865

Subproblem 2

x + 2.5 = -15.305227865 Simplifying x + 2.5 = -15.305227865 Reorder the terms: 2.5 + x = -15.305227865 Solving 2.5 + x = -15.305227865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -15.305227865 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -15.305227865 + -2.5 x = -15.305227865 + -2.5 Combine like terms: -15.305227865 + -2.5 = -17.805227865 x = -17.805227865 Simplifying x = -17.805227865

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.805227865, -17.805227865}

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