180-x^2+x-5=7x+5

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Solution for 180-x^2+x-5=7x+5 equation:


Simplifying
180 + -1x2 + x + -5 = 7x + 5

Reorder the terms:
180 + -5 + x + -1x2 = 7x + 5

Combine like terms: 180 + -5 = 175
175 + x + -1x2 = 7x + 5

Reorder the terms:
175 + x + -1x2 = 5 + 7x

Solving
175 + x + -1x2 = 5 + 7x

Solving for variable 'x'.

Reorder the terms:
175 + -5 + x + -7x + -1x2 = 5 + 7x + -5 + -7x

Combine like terms: 175 + -5 = 170
170 + x + -7x + -1x2 = 5 + 7x + -5 + -7x

Combine like terms: x + -7x = -6x
170 + -6x + -1x2 = 5 + 7x + -5 + -7x

Reorder the terms:
170 + -6x + -1x2 = 5 + -5 + 7x + -7x

Combine like terms: 5 + -5 = 0
170 + -6x + -1x2 = 0 + 7x + -7x
170 + -6x + -1x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
170 + -6x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-170 + 6x + x2 = 0

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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