x^2+4x-432=0

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Solution for x^2+4x-432=0 equation:


Simplifying
x2 + 4x + -432 = 0

Reorder the terms:
-432 + 4x + x2 = 0

Solving
-432 + 4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '432' to each side of the equation.
-432 + 4x + 432 + x2 = 0 + 432

Reorder the terms:
-432 + 432 + 4x + x2 = 0 + 432

Combine like terms: -432 + 432 = 0
0 + 4x + x2 = 0 + 432
4x + x2 = 0 + 432

Combine like terms: 0 + 432 = 432
4x + x2 = 432

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 = 432 + 4

Reorder the terms:
4 + 4x + x2 = 432 + 4

Combine like terms: 432 + 4 = 436
4 + 4x + x2 = 436

Factor a perfect square on the left side:
(x + 2)(x + 2) = 436

Calculate the square root of the right side: 20.880613018

Break this problem into two subproblems by setting 
(x + 2) equal to 20.880613018 and -20.880613018.

Subproblem 1

x + 2 = 20.880613018 Simplifying x + 2 = 20.880613018 Reorder the terms: 2 + x = 20.880613018 Solving 2 + x = 20.880613018 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 = 20.880613018 + -2 Combine like terms: 2 + -2 = 0 0 + x = 20.880613018 + -2 x = 20.880613018 + -2 Combine like terms: 20.880613018 + -2 = 18.880613018 x = 18.880613018 Simplifying x = 18.880613018

Subproblem 2

x + 2 = -20.880613018 Simplifying x + 2 = -20.880613018 Reorder the terms: 2 + x = -20.880613018 Solving 2 + x = -20.880613018 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 = -20.880613018 + -2 Combine like terms: 2 + -2 = 0 0 + x = -20.880613018 + -2 x = -20.880613018 + -2 Combine like terms: -20.880613018 + -2 = -22.880613018 x = -22.880613018 Simplifying x = -22.880613018

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.880613018, -22.880613018}

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