(x)=x^2-10x-3

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Solution for (x)=x^2-10x-3 equation:


Simplifying
(x) = x2 + -10x + -3
x = x2 + -10x + -3

Reorder the terms:
x = -3 + -10x + x2

Solving
x = -3 + -10x + x2

Solving for variable 'x'.

Reorder the terms:
3 + x + 10x + -1x2 = -3 + -10x + x2 + 3 + 10x + -1x2

Combine like terms: x + 10x = 11x
3 + 11x + -1x2 = -3 + -10x + x2 + 3 + 10x + -1x2

Reorder the terms:
3 + 11x + -1x2 = -3 + 3 + -10x + 10x + x2 + -1x2

Combine like terms: -3 + 3 = 0
3 + 11x + -1x2 = 0 + -10x + 10x + x2 + -1x2
3 + 11x + -1x2 = -10x + 10x + x2 + -1x2

Combine like terms: -10x + 10x = 0
3 + 11x + -1x2 = 0 + x2 + -1x2
3 + 11x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
3 + 11x + -1x2 = 0

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

Divide each side by '-1'.
-3 + -11x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -11x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -11x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -11x + x2 = 0 + 3
-11x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-11x + x2 = 3

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = 3 + 30.25

Reorder the terms:
30.25 + -11x + x2 = 3 + 30.25

Combine like terms: 3 + 30.25 = 33.25
30.25 + -11x + x2 = 33.25

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 33.25

Calculate the square root of the right side: 5.766281297

Break this problem into two subproblems by setting 
(x + -5.5) equal to 5.766281297 and -5.766281297.

Subproblem 1

x + -5.5 = 5.766281297 Simplifying x + -5.5 = 5.766281297 Reorder the terms: -5.5 + x = 5.766281297 Solving -5.5 + x = 5.766281297 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 5.766281297 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 5.766281297 + 5.5 x = 5.766281297 + 5.5 Combine like terms: 5.766281297 + 5.5 = 11.266281297 x = 11.266281297 Simplifying x = 11.266281297

Subproblem 2

x + -5.5 = -5.766281297 Simplifying x + -5.5 = -5.766281297 Reorder the terms: -5.5 + x = -5.766281297 Solving -5.5 + x = -5.766281297 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -5.766281297 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -5.766281297 + 5.5 x = -5.766281297 + 5.5 Combine like terms: -5.766281297 + 5.5 = -0.266281297 x = -0.266281297 Simplifying x = -0.266281297

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.266281297, -0.266281297}

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