(x+11)(x+5)=2

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Solution for (x+11)(x+5)=2 equation:


Simplifying
(x + 11)(x + 5) = 2

Reorder the terms:
(11 + x)(x + 5) = 2

Reorder the terms:
(11 + x)(5 + x) = 2

Multiply (11 + x) * (5 + x)
(11(5 + x) + x(5 + x)) = 2
((5 * 11 + x * 11) + x(5 + x)) = 2
((55 + 11x) + x(5 + x)) = 2
(55 + 11x + (5 * x + x * x)) = 2
(55 + 11x + (5x + x2)) = 2

Combine like terms: 11x + 5x = 16x
(55 + 16x + x2) = 2

Solving
55 + 16x + x2 = 2

Solving for variable 'x'.

Reorder the terms:
55 + -2 + 16x + x2 = 2 + -2

Combine like terms: 55 + -2 = 53
53 + 16x + x2 = 2 + -2

Combine like terms: 2 + -2 = 0
53 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-53' to each side of the equation.
53 + 16x + -53 + x2 = 0 + -53

Reorder the terms:
53 + -53 + 16x + x2 = 0 + -53

Combine like terms: 53 + -53 = 0
0 + 16x + x2 = 0 + -53
16x + x2 = 0 + -53

Combine like terms: 0 + -53 = -53
16x + x2 = -53

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 = -53 + 64

Reorder the terms:
64 + 16x + x2 = -53 + 64

Combine like terms: -53 + 64 = 11
64 + 16x + x2 = 11

Factor a perfect square on the left side:
(x + 8)(x + 8) = 11

Calculate the square root of the right side: 3.31662479

Break this problem into two subproblems by setting 
(x + 8) equal to 3.31662479 and -3.31662479.

Subproblem 1

x + 8 = 3.31662479 Simplifying x + 8 = 3.31662479 Reorder the terms: 8 + x = 3.31662479 Solving 8 + x = 3.31662479 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 = 3.31662479 + -8 Combine like terms: 8 + -8 = 0 0 + x = 3.31662479 + -8 x = 3.31662479 + -8 Combine like terms: 3.31662479 + -8 = -4.68337521 x = -4.68337521 Simplifying x = -4.68337521

Subproblem 2

x + 8 = -3.31662479 Simplifying x + 8 = -3.31662479 Reorder the terms: 8 + x = -3.31662479 Solving 8 + x = -3.31662479 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 = -3.31662479 + -8 Combine like terms: 8 + -8 = 0 0 + x = -3.31662479 + -8 x = -3.31662479 + -8 Combine like terms: -3.31662479 + -8 = -11.31662479 x = -11.31662479 Simplifying x = -11.31662479

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-4.68337521, -11.31662479}

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