x^2+2x-523=0

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Solution for x^2+2x-523=0 equation:


Simplifying
x2 + 2x + -523 = 0

Reorder the terms:
-523 + 2x + x2 = 0

Solving
-523 + 2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '523' to each side of the equation.
-523 + 2x + 523 + x2 = 0 + 523

Reorder the terms:
-523 + 523 + 2x + x2 = 0 + 523

Combine like terms: -523 + 523 = 0
0 + 2x + x2 = 0 + 523
2x + x2 = 0 + 523

Combine like terms: 0 + 523 = 523
2x + x2 = 523

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 523 + 1

Reorder the terms:
1 + 2x + x2 = 523 + 1

Combine like terms: 523 + 1 = 524
1 + 2x + x2 = 524

Factor a perfect square on the left side:
(x + 1)(x + 1) = 524

Calculate the square root of the right side: 22.891046285

Break this problem into two subproblems by setting 
(x + 1) equal to 22.891046285 and -22.891046285.

Subproblem 1

x + 1 = 22.891046285 Simplifying x + 1 = 22.891046285 Reorder the terms: 1 + x = 22.891046285 Solving 1 + x = 22.891046285 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 22.891046285 + -1 Combine like terms: 1 + -1 = 0 0 + x = 22.891046285 + -1 x = 22.891046285 + -1 Combine like terms: 22.891046285 + -1 = 21.891046285 x = 21.891046285 Simplifying x = 21.891046285

Subproblem 2

x + 1 = -22.891046285 Simplifying x + 1 = -22.891046285 Reorder the terms: 1 + x = -22.891046285 Solving 1 + x = -22.891046285 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -22.891046285 + -1 Combine like terms: 1 + -1 = 0 0 + x = -22.891046285 + -1 x = -22.891046285 + -1 Combine like terms: -22.891046285 + -1 = -23.891046285 x = -23.891046285 Simplifying x = -23.891046285

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.891046285, -23.891046285}

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