(x+10)+x(x+5)=180

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Solution for (x+10)+x(x+5)=180 equation:


Simplifying
(x + 10) + x(x + 5) = 180

Reorder the terms:
(10 + x) + x(x + 5) = 180

Remove parenthesis around (10 + x)
10 + x + x(x + 5) = 180

Reorder the terms:
10 + x + x(5 + x) = 180
10 + x + (5 * x + x * x) = 180
10 + x + (5x + x2) = 180

Combine like terms: x + 5x = 6x
10 + 6x + x2 = 180

Solving
10 + 6x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
10 + -180 + 6x + x2 = 180 + -180

Combine like terms: 10 + -180 = -170
-170 + 6x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-170 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '170' to each side of the equation.
-170 + 6x + 170 + x2 = 0 + 170

Reorder the terms:
-170 + 170 + 6x + x2 = 0 + 170

Combine like terms: -170 + 170 = 0
0 + 6x + x2 = 0 + 170
6x + x2 = 0 + 170

Combine like terms: 0 + 170 = 170
6x + x2 = 170

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 170 + 9

Reorder the terms:
9 + 6x + x2 = 170 + 9

Combine like terms: 170 + 9 = 179
9 + 6x + x2 = 179

Factor a perfect square on the left side:
(x + 3)(x + 3) = 179

Calculate the square root of the right side: 13.37908816

Break this problem into two subproblems by setting 
(x + 3) equal to 13.37908816 and -13.37908816.

Subproblem 1

x + 3 = 13.37908816 Simplifying x + 3 = 13.37908816 Reorder the terms: 3 + x = 13.37908816 Solving 3 + x = 13.37908816 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 13.37908816 + -3 Combine like terms: 3 + -3 = 0 0 + x = 13.37908816 + -3 x = 13.37908816 + -3 Combine like terms: 13.37908816 + -3 = 10.37908816 x = 10.37908816 Simplifying x = 10.37908816

Subproblem 2

x + 3 = -13.37908816 Simplifying x + 3 = -13.37908816 Reorder the terms: 3 + x = -13.37908816 Solving 3 + x = -13.37908816 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -13.37908816 + -3 Combine like terms: 3 + -3 = 0 0 + x = -13.37908816 + -3 x = -13.37908816 + -3 Combine like terms: -13.37908816 + -3 = -16.37908816 x = -16.37908816 Simplifying x = -16.37908816

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.37908816, -16.37908816}

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