(x+6)(x+8)=160

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Solution for (x+6)(x+8)=160 equation:


Simplifying
(x + 6)(x + 8) = 160

Reorder the terms:
(6 + x)(x + 8) = 160

Reorder the terms:
(6 + x)(8 + x) = 160

Multiply (6 + x) * (8 + x)
(6(8 + x) + x(8 + x)) = 160
((8 * 6 + x * 6) + x(8 + x)) = 160
((48 + 6x) + x(8 + x)) = 160
(48 + 6x + (8 * x + x * x)) = 160
(48 + 6x + (8x + x2)) = 160

Combine like terms: 6x + 8x = 14x
(48 + 14x + x2) = 160

Solving
48 + 14x + x2 = 160

Solving for variable 'x'.

Reorder the terms:
48 + -160 + 14x + x2 = 160 + -160

Combine like terms: 48 + -160 = -112
-112 + 14x + x2 = 160 + -160

Combine like terms: 160 + -160 = 0
-112 + 14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '112' to each side of the equation.
-112 + 14x + 112 + x2 = 0 + 112

Reorder the terms:
-112 + 112 + 14x + x2 = 0 + 112

Combine like terms: -112 + 112 = 0
0 + 14x + x2 = 0 + 112
14x + x2 = 0 + 112

Combine like terms: 0 + 112 = 112
14x + x2 = 112

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 = 112 + 49

Reorder the terms:
49 + 14x + x2 = 112 + 49

Combine like terms: 112 + 49 = 161
49 + 14x + x2 = 161

Factor a perfect square on the left side:
(x + 7)(x + 7) = 161

Calculate the square root of the right side: 12.68857754

Break this problem into two subproblems by setting 
(x + 7) equal to 12.68857754 and -12.68857754.

Subproblem 1

x + 7 = 12.68857754 Simplifying x + 7 = 12.68857754 Reorder the terms: 7 + x = 12.68857754 Solving 7 + x = 12.68857754 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 = 12.68857754 + -7 Combine like terms: 7 + -7 = 0 0 + x = 12.68857754 + -7 x = 12.68857754 + -7 Combine like terms: 12.68857754 + -7 = 5.68857754 x = 5.68857754 Simplifying x = 5.68857754

Subproblem 2

x + 7 = -12.68857754 Simplifying x + 7 = -12.68857754 Reorder the terms: 7 + x = -12.68857754 Solving 7 + x = -12.68857754 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 = -12.68857754 + -7 Combine like terms: 7 + -7 = 0 0 + x = -12.68857754 + -7 x = -12.68857754 + -7 Combine like terms: -12.68857754 + -7 = -19.68857754 x = -19.68857754 Simplifying x = -19.68857754

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.68857754, -19.68857754}

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