0=x^2-10x-83

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Solution for 0=x^2-10x-83 equation:


Simplifying
0 = x2 + -10x + -83

Reorder the terms:
0 = -83 + -10x + x2

Solving
0 = -83 + -10x + x2

Solving for variable 'x'.

Combine like terms: 0 + 83 = 83
83 + 10x + -1x2 = -83 + -10x + x2 + 83 + 10x + -1x2

Reorder the terms:
83 + 10x + -1x2 = -83 + 83 + -10x + 10x + x2 + -1x2

Combine like terms: -83 + 83 = 0
83 + 10x + -1x2 = 0 + -10x + 10x + x2 + -1x2
83 + 10x + -1x2 = -10x + 10x + x2 + -1x2

Combine like terms: -10x + 10x = 0
83 + 10x + -1x2 = 0 + x2 + -1x2
83 + 10x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
83 + 10x + -1x2 = 0

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

Divide each side by '-1'.
-83 + -10x + x2 = 0

Move the constant term to the right:

Add '83' to each side of the equation.
-83 + -10x + 83 + x2 = 0 + 83

Reorder the terms:
-83 + 83 + -10x + x2 = 0 + 83

Combine like terms: -83 + 83 = 0
0 + -10x + x2 = 0 + 83
-10x + x2 = 0 + 83

Combine like terms: 0 + 83 = 83
-10x + x2 = 83

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = 83 + 25

Reorder the terms:
25 + -10x + x2 = 83 + 25

Combine like terms: 83 + 25 = 108
25 + -10x + x2 = 108

Factor a perfect square on the left side:
(x + -5)(x + -5) = 108

Calculate the square root of the right side: 10.392304845

Break this problem into two subproblems by setting 
(x + -5) equal to 10.392304845 and -10.392304845.

Subproblem 1

x + -5 = 10.392304845 Simplifying x + -5 = 10.392304845 Reorder the terms: -5 + x = 10.392304845 Solving -5 + x = 10.392304845 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 10.392304845 + 5 Combine like terms: -5 + 5 = 0 0 + x = 10.392304845 + 5 x = 10.392304845 + 5 Combine like terms: 10.392304845 + 5 = 15.392304845 x = 15.392304845 Simplifying x = 15.392304845

Subproblem 2

x + -5 = -10.392304845 Simplifying x + -5 = -10.392304845 Reorder the terms: -5 + x = -10.392304845 Solving -5 + x = -10.392304845 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -10.392304845 + 5 Combine like terms: -5 + 5 = 0 0 + x = -10.392304845 + 5 x = -10.392304845 + 5 Combine like terms: -10.392304845 + 5 = -5.392304845 x = -5.392304845 Simplifying x = -5.392304845

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.392304845, -5.392304845}

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