x^2+4x-23=180

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Solution for x^2+4x-23=180 equation:


Simplifying
x2 + 4x + -23 = 180

Reorder the terms:
-23 + 4x + x2 = 180

Solving
-23 + 4x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
-23 + -180 + 4x + x2 = 180 + -180

Combine like terms: -23 + -180 = -203
-203 + 4x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-203 + 4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '203' to each side of the equation.
-203 + 4x + 203 + x2 = 0 + 203

Reorder the terms:
-203 + 203 + 4x + x2 = 0 + 203

Combine like terms: -203 + 203 = 0
0 + 4x + x2 = 0 + 203
4x + x2 = 0 + 203

Combine like terms: 0 + 203 = 203
4x + x2 = 203

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 203 + 4

Reorder the terms:
4 + 4x + x2 = 203 + 4

Combine like terms: 203 + 4 = 207
4 + 4x + x2 = 207

Factor a perfect square on the left side:
(x + 2)(x + 2) = 207

Calculate the square root of the right side: 14.38749457

Break this problem into two subproblems by setting 
(x + 2) equal to 14.38749457 and -14.38749457.

Subproblem 1

x + 2 = 14.38749457 Simplifying x + 2 = 14.38749457 Reorder the terms: 2 + x = 14.38749457 Solving 2 + x = 14.38749457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 14.38749457 + -2 Combine like terms: 2 + -2 = 0 0 + x = 14.38749457 + -2 x = 14.38749457 + -2 Combine like terms: 14.38749457 + -2 = 12.38749457 x = 12.38749457 Simplifying x = 12.38749457

Subproblem 2

x + 2 = -14.38749457 Simplifying x + 2 = -14.38749457 Reorder the terms: 2 + x = -14.38749457 Solving 2 + x = -14.38749457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -14.38749457 + -2 Combine like terms: 2 + -2 = 0 0 + x = -14.38749457 + -2 x = -14.38749457 + -2 Combine like terms: -14.38749457 + -2 = -16.38749457 x = -16.38749457 Simplifying x = -16.38749457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.38749457, -16.38749457}

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