x^2+2x-272=0

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Solution for x^2+2x-272=0 equation:


Simplifying
x2 + 2x + -272 = 0

Reorder the terms:
-272 + 2x + x2 = 0

Solving
-272 + 2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '272' to each side of the equation.
-272 + 2x + 272 + x2 = 0 + 272

Reorder the terms:
-272 + 272 + 2x + x2 = 0 + 272

Combine like terms: -272 + 272 = 0
0 + 2x + x2 = 0 + 272
2x + x2 = 0 + 272

Combine like terms: 0 + 272 = 272
2x + x2 = 272

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 = 272 + 1

Reorder the terms:
1 + 2x + x2 = 272 + 1

Combine like terms: 272 + 1 = 273
1 + 2x + x2 = 273

Factor a perfect square on the left side:
(x + 1)(x + 1) = 273

Calculate the square root of the right side: 16.522711642

Break this problem into two subproblems by setting 
(x + 1) equal to 16.522711642 and -16.522711642.

Subproblem 1

x + 1 = 16.522711642 Simplifying x + 1 = 16.522711642 Reorder the terms: 1 + x = 16.522711642 Solving 1 + x = 16.522711642 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 = 16.522711642 + -1 Combine like terms: 1 + -1 = 0 0 + x = 16.522711642 + -1 x = 16.522711642 + -1 Combine like terms: 16.522711642 + -1 = 15.522711642 x = 15.522711642 Simplifying x = 15.522711642

Subproblem 2

x + 1 = -16.522711642 Simplifying x + 1 = -16.522711642 Reorder the terms: 1 + x = -16.522711642 Solving 1 + x = -16.522711642 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 = -16.522711642 + -1 Combine like terms: 1 + -1 = 0 0 + x = -16.522711642 + -1 x = -16.522711642 + -1 Combine like terms: -16.522711642 + -1 = -17.522711642 x = -17.522711642 Simplifying x = -17.522711642

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.522711642, -17.522711642}

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