x^2+2x-237=0

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Solution for x^2+2x-237=0 equation:


Simplifying
x2 + 2x + -237 = 0

Reorder the terms:
-237 + 2x + x2 = 0

Solving
-237 + 2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '237' to each side of the equation.
-237 + 2x + 237 + x2 = 0 + 237

Reorder the terms:
-237 + 237 + 2x + x2 = 0 + 237

Combine like terms: -237 + 237 = 0
0 + 2x + x2 = 0 + 237
2x + x2 = 0 + 237

Combine like terms: 0 + 237 = 237
2x + x2 = 237

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 = 237 + 1

Reorder the terms:
1 + 2x + x2 = 237 + 1

Combine like terms: 237 + 1 = 238
1 + 2x + x2 = 238

Factor a perfect square on the left side:
(x + 1)(x + 1) = 238

Calculate the square root of the right side: 15.427248621

Break this problem into two subproblems by setting 
(x + 1) equal to 15.427248621 and -15.427248621.

Subproblem 1

x + 1 = 15.427248621 Simplifying x + 1 = 15.427248621 Reorder the terms: 1 + x = 15.427248621 Solving 1 + x = 15.427248621 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 = 15.427248621 + -1 Combine like terms: 1 + -1 = 0 0 + x = 15.427248621 + -1 x = 15.427248621 + -1 Combine like terms: 15.427248621 + -1 = 14.427248621 x = 14.427248621 Simplifying x = 14.427248621

Subproblem 2

x + 1 = -15.427248621 Simplifying x + 1 = -15.427248621 Reorder the terms: 1 + x = -15.427248621 Solving 1 + x = -15.427248621 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 = -15.427248621 + -1 Combine like terms: 1 + -1 = 0 0 + x = -15.427248621 + -1 x = -15.427248621 + -1 Combine like terms: -15.427248621 + -1 = -16.427248621 x = -16.427248621 Simplifying x = -16.427248621

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.427248621, -16.427248621}

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