(x+6)(x+4)=2

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Solution for (x+6)(x+4)=2 equation:


Simplifying
(x + 6)(x + 4) = 2

Reorder the terms:
(6 + x)(x + 4) = 2

Reorder the terms:
(6 + x)(4 + x) = 2

Multiply (6 + x) * (4 + x)
(6(4 + x) + x(4 + x)) = 2
((4 * 6 + x * 6) + x(4 + x)) = 2
((24 + 6x) + x(4 + x)) = 2
(24 + 6x + (4 * x + x * x)) = 2
(24 + 6x + (4x + x2)) = 2

Combine like terms: 6x + 4x = 10x
(24 + 10x + x2) = 2

Solving
24 + 10x + x2 = 2

Solving for variable 'x'.

Reorder the terms:
24 + -2 + 10x + x2 = 2 + -2

Combine like terms: 24 + -2 = 22
22 + 10x + x2 = 2 + -2

Combine like terms: 2 + -2 = 0
22 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-22' to each side of the equation.
22 + 10x + -22 + x2 = 0 + -22

Reorder the terms:
22 + -22 + 10x + x2 = 0 + -22

Combine like terms: 22 + -22 = 0
0 + 10x + x2 = 0 + -22
10x + x2 = 0 + -22

Combine like terms: 0 + -22 = -22
10x + x2 = -22

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = -22 + 25

Reorder the terms:
25 + 10x + x2 = -22 + 25

Combine like terms: -22 + 25 = 3
25 + 10x + x2 = 3

Factor a perfect square on the left side:
(x + 5)(x + 5) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + 5) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + 5 = 1.732050808 Simplifying x + 5 = 1.732050808 Reorder the terms: 5 + x = 1.732050808 Solving 5 + x = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 1.732050808 + -5 Combine like terms: 5 + -5 = 0 0 + x = 1.732050808 + -5 x = 1.732050808 + -5 Combine like terms: 1.732050808 + -5 = -3.267949192 x = -3.267949192 Simplifying x = -3.267949192

Subproblem 2

x + 5 = -1.732050808 Simplifying x + 5 = -1.732050808 Reorder the terms: 5 + x = -1.732050808 Solving 5 + x = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -1.732050808 + -5 Combine like terms: 5 + -5 = 0 0 + x = -1.732050808 + -5 x = -1.732050808 + -5 Combine like terms: -1.732050808 + -5 = -6.732050808 x = -6.732050808 Simplifying x = -6.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.267949192, -6.732050808}

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