540.56-73x-x^2=0

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Solution for 540.56-73x-x^2=0 equation:


Simplifying
540.56 + -73x + -1x2 = 0

Solving
540.56 + -73x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
-540.56 + 73x + x2 = 0

Move the constant term to the right:

Add '540.56' to each side of the equation.
-540.56 + 73x + 540.56 + x2 = 0 + 540.56

Reorder the terms:
-540.56 + 540.56 + 73x + x2 = 0 + 540.56

Combine like terms: -540.56 + 540.56 = 0.00
0.00 + 73x + x2 = 0 + 540.56
73x + x2 = 0 + 540.56

Combine like terms: 0 + 540.56 = 540.56
73x + x2 = 540.56

The x term is 73x.  Take half its coefficient (36.5).
Square it (1332.25) and add it to both sides.

Add '1332.25' to each side of the equation.
73x + 1332.25 + x2 = 540.56 + 1332.25

Reorder the terms:
1332.25 + 73x + x2 = 540.56 + 1332.25

Combine like terms: 540.56 + 1332.25 = 1872.81
1332.25 + 73x + x2 = 1872.81

Factor a perfect square on the left side:
(x + 36.5)(x + 36.5) = 1872.81

Calculate the square root of the right side: 43.275974859

Break this problem into two subproblems by setting 
(x + 36.5) equal to 43.275974859 and -43.275974859.

Subproblem 1

x + 36.5 = 43.275974859 Simplifying x + 36.5 = 43.275974859 Reorder the terms: 36.5 + x = 43.275974859 Solving 36.5 + x = 43.275974859 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-36.5' to each side of the equation. 36.5 + -36.5 + x = 43.275974859 + -36.5 Combine like terms: 36.5 + -36.5 = 0.0 0.0 + x = 43.275974859 + -36.5 x = 43.275974859 + -36.5 Combine like terms: 43.275974859 + -36.5 = 6.775974859 x = 6.775974859 Simplifying x = 6.775974859

Subproblem 2

x + 36.5 = -43.275974859 Simplifying x + 36.5 = -43.275974859 Reorder the terms: 36.5 + x = -43.275974859 Solving 36.5 + x = -43.275974859 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-36.5' to each side of the equation. 36.5 + -36.5 + x = -43.275974859 + -36.5 Combine like terms: 36.5 + -36.5 = 0.0 0.0 + x = -43.275974859 + -36.5 x = -43.275974859 + -36.5 Combine like terms: -43.275974859 + -36.5 = -79.775974859 x = -79.775974859 Simplifying x = -79.775974859

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.775974859, -79.775974859}

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