(x+4)(x+6)=56

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Solution for (x+4)(x+6)=56 equation:


Simplifying
(x + 4)(x + 6) = 56

Reorder the terms:
(4 + x)(x + 6) = 56

Reorder the terms:
(4 + x)(6 + x) = 56

Multiply (4 + x) * (6 + x)
(4(6 + x) + x(6 + x)) = 56
((6 * 4 + x * 4) + x(6 + x)) = 56
((24 + 4x) + x(6 + x)) = 56
(24 + 4x + (6 * x + x * x)) = 56
(24 + 4x + (6x + x2)) = 56

Combine like terms: 4x + 6x = 10x
(24 + 10x + x2) = 56

Solving
24 + 10x + x2 = 56

Solving for variable 'x'.

Reorder the terms:
24 + -56 + 10x + x2 = 56 + -56

Combine like terms: 24 + -56 = -32
-32 + 10x + x2 = 56 + -56

Combine like terms: 56 + -56 = 0
-32 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + 10x + 32 + x2 = 0 + 32

Reorder the terms:
-32 + 32 + 10x + x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 10x + x2 = 0 + 32
10x + x2 = 0 + 32

Combine like terms: 0 + 32 = 32
10x + x2 = 32

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 = 32 + 25

Reorder the terms:
25 + 10x + x2 = 32 + 25

Combine like terms: 32 + 25 = 57
25 + 10x + x2 = 57

Factor a perfect square on the left side:
(x + 5)(x + 5) = 57

Calculate the square root of the right side: 7.549834435

Break this problem into two subproblems by setting 
(x + 5) equal to 7.549834435 and -7.549834435.

Subproblem 1

x + 5 = 7.549834435 Simplifying x + 5 = 7.549834435 Reorder the terms: 5 + x = 7.549834435 Solving 5 + x = 7.549834435 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 = 7.549834435 + -5 Combine like terms: 5 + -5 = 0 0 + x = 7.549834435 + -5 x = 7.549834435 + -5 Combine like terms: 7.549834435 + -5 = 2.549834435 x = 2.549834435 Simplifying x = 2.549834435

Subproblem 2

x + 5 = -7.549834435 Simplifying x + 5 = -7.549834435 Reorder the terms: 5 + x = -7.549834435 Solving 5 + x = -7.549834435 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 = -7.549834435 + -5 Combine like terms: 5 + -5 = 0 0 + x = -7.549834435 + -5 x = -7.549834435 + -5 Combine like terms: -7.549834435 + -5 = -12.549834435 x = -12.549834435 Simplifying x = -12.549834435

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.549834435, -12.549834435}

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