(x+66)(x+47)=79

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Solution for (x+66)(x+47)=79 equation:


Simplifying
(x + 66)(x + 47) = 79

Reorder the terms:
(66 + x)(x + 47) = 79

Reorder the terms:
(66 + x)(47 + x) = 79

Multiply (66 + x) * (47 + x)
(66(47 + x) + x(47 + x)) = 79
((47 * 66 + x * 66) + x(47 + x)) = 79
((3102 + 66x) + x(47 + x)) = 79
(3102 + 66x + (47 * x + x * x)) = 79
(3102 + 66x + (47x + x2)) = 79

Combine like terms: 66x + 47x = 113x
(3102 + 113x + x2) = 79

Solving
3102 + 113x + x2 = 79

Solving for variable 'x'.

Reorder the terms:
3102 + -79 + 113x + x2 = 79 + -79

Combine like terms: 3102 + -79 = 3023
3023 + 113x + x2 = 79 + -79

Combine like terms: 79 + -79 = 0
3023 + 113x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-3023' to each side of the equation.
3023 + 113x + -3023 + x2 = 0 + -3023

Reorder the terms:
3023 + -3023 + 113x + x2 = 0 + -3023

Combine like terms: 3023 + -3023 = 0
0 + 113x + x2 = 0 + -3023
113x + x2 = 0 + -3023

Combine like terms: 0 + -3023 = -3023
113x + x2 = -3023

The x term is 113x.  Take half its coefficient (56.5).
Square it (3192.25) and add it to both sides.

Add '3192.25' to each side of the equation.
113x + 3192.25 + x2 = -3023 + 3192.25

Reorder the terms:
3192.25 + 113x + x2 = -3023 + 3192.25

Combine like terms: -3023 + 3192.25 = 169.25
3192.25 + 113x + x2 = 169.25

Factor a perfect square on the left side:
(x + 56.5)(x + 56.5) = 169.25

Calculate the square root of the right side: 13.009611831

Break this problem into two subproblems by setting 
(x + 56.5) equal to 13.009611831 and -13.009611831.

Subproblem 1

x + 56.5 = 13.009611831 Simplifying x + 56.5 = 13.009611831 Reorder the terms: 56.5 + x = 13.009611831 Solving 56.5 + x = 13.009611831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-56.5' to each side of the equation. 56.5 + -56.5 + x = 13.009611831 + -56.5 Combine like terms: 56.5 + -56.5 = 0.0 0.0 + x = 13.009611831 + -56.5 x = 13.009611831 + -56.5 Combine like terms: 13.009611831 + -56.5 = -43.490388169 x = -43.490388169 Simplifying x = -43.490388169

Subproblem 2

x + 56.5 = -13.009611831 Simplifying x + 56.5 = -13.009611831 Reorder the terms: 56.5 + x = -13.009611831 Solving 56.5 + x = -13.009611831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-56.5' to each side of the equation. 56.5 + -56.5 + x = -13.009611831 + -56.5 Combine like terms: 56.5 + -56.5 = 0.0 0.0 + x = -13.009611831 + -56.5 x = -13.009611831 + -56.5 Combine like terms: -13.009611831 + -56.5 = -69.509611831 x = -69.509611831 Simplifying x = -69.509611831

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-43.490388169, -69.509611831}

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