(x+11)(x+3)=-5

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Solution for (x+11)(x+3)=-5 equation:


Simplifying
(x + 11)(x + 3) = -5

Reorder the terms:
(11 + x)(x + 3) = -5

Reorder the terms:
(11 + x)(3 + x) = -5

Multiply (11 + x) * (3 + x)
(11(3 + x) + x(3 + x)) = -5
((3 * 11 + x * 11) + x(3 + x)) = -5
((33 + 11x) + x(3 + x)) = -5
(33 + 11x + (3 * x + x * x)) = -5
(33 + 11x + (3x + x2)) = -5

Combine like terms: 11x + 3x = 14x
(33 + 14x + x2) = -5

Solving
33 + 14x + x2 = -5

Solving for variable 'x'.

Reorder the terms:
33 + 5 + 14x + x2 = -5 + 5

Combine like terms: 33 + 5 = 38
38 + 14x + x2 = -5 + 5

Combine like terms: -5 + 5 = 0
38 + 14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-38' to each side of the equation.
38 + 14x + -38 + x2 = 0 + -38

Reorder the terms:
38 + -38 + 14x + x2 = 0 + -38

Combine like terms: 38 + -38 = 0
0 + 14x + x2 = 0 + -38
14x + x2 = 0 + -38

Combine like terms: 0 + -38 = -38
14x + x2 = -38

The x term is 14x.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14x + 49 + x2 = -38 + 49

Reorder the terms:
49 + 14x + x2 = -38 + 49

Combine like terms: -38 + 49 = 11
49 + 14x + x2 = 11

Factor a perfect square on the left side:
(x + 7)(x + 7) = 11

Calculate the square root of the right side: 3.31662479

Break this problem into two subproblems by setting 
(x + 7) equal to 3.31662479 and -3.31662479.

Subproblem 1

x + 7 = 3.31662479 Simplifying x + 7 = 3.31662479 Reorder the terms: 7 + x = 3.31662479 Solving 7 + x = 3.31662479 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 3.31662479 + -7 Combine like terms: 7 + -7 = 0 0 + x = 3.31662479 + -7 x = 3.31662479 + -7 Combine like terms: 3.31662479 + -7 = -3.68337521 x = -3.68337521 Simplifying x = -3.68337521

Subproblem 2

x + 7 = -3.31662479 Simplifying x + 7 = -3.31662479 Reorder the terms: 7 + x = -3.31662479 Solving 7 + x = -3.31662479 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -3.31662479 + -7 Combine like terms: 7 + -7 = 0 0 + x = -3.31662479 + -7 x = -3.31662479 + -7 Combine like terms: -3.31662479 + -7 = -10.31662479 x = -10.31662479 Simplifying x = -10.31662479

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.68337521, -10.31662479}

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