x^2+16x=-44

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Solution for x^2+16x=-44 equation:


Simplifying
x2 + 16x = -44

Reorder the terms:
16x + x2 = -44

Solving
16x + x2 = -44

Solving for variable 'x'.

Reorder the terms:
44 + 16x + x2 = -44 + 44

Combine like terms: -44 + 44 = 0
44 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-44' to each side of the equation.
44 + 16x + -44 + x2 = 0 + -44

Reorder the terms:
44 + -44 + 16x + x2 = 0 + -44

Combine like terms: 44 + -44 = 0
0 + 16x + x2 = 0 + -44
16x + x2 = 0 + -44

Combine like terms: 0 + -44 = -44
16x + x2 = -44

The x term is 16x.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16x + 64 + x2 = -44 + 64

Reorder the terms:
64 + 16x + x2 = -44 + 64

Combine like terms: -44 + 64 = 20
64 + 16x + x2 = 20

Factor a perfect square on the left side:
(x + 8)(x + 8) = 20

Calculate the square root of the right side: 4.472135955

Break this problem into two subproblems by setting 
(x + 8) equal to 4.472135955 and -4.472135955.

Subproblem 1

x + 8 = 4.472135955 Simplifying x + 8 = 4.472135955 Reorder the terms: 8 + x = 4.472135955 Solving 8 + x = 4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 4.472135955 + -8 Combine like terms: 8 + -8 = 0 0 + x = 4.472135955 + -8 x = 4.472135955 + -8 Combine like terms: 4.472135955 + -8 = -3.527864045 x = -3.527864045 Simplifying x = -3.527864045

Subproblem 2

x + 8 = -4.472135955 Simplifying x + 8 = -4.472135955 Reorder the terms: 8 + x = -4.472135955 Solving 8 + x = -4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = -4.472135955 + -8 Combine like terms: 8 + -8 = 0 0 + x = -4.472135955 + -8 x = -4.472135955 + -8 Combine like terms: -4.472135955 + -8 = -12.472135955 x = -12.472135955 Simplifying x = -12.472135955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.527864045, -12.472135955}

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