18x^2-198x+1=0

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Solution for 18x^2-198x+1=0 equation:


Simplifying
18x2 + -198x + 1 = 0

Reorder the terms:
1 + -198x + 18x2 = 0

Solving
1 + -198x + 18x2 = 0

Solving for variable 'x'.

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

Divide each side by '18'.
0.05555555556 + -11x + x2 = 0

Move the constant term to the right:

Add '-0.05555555556' to each side of the equation.
0.05555555556 + -11x + -0.05555555556 + x2 = 0 + -0.05555555556

Reorder the terms:
0.05555555556 + -0.05555555556 + -11x + x2 = 0 + -0.05555555556

Combine like terms: 0.05555555556 + -0.05555555556 = 0.00000000000
0.00000000000 + -11x + x2 = 0 + -0.05555555556
-11x + x2 = 0 + -0.05555555556

Combine like terms: 0 + -0.05555555556 = -0.05555555556
-11x + x2 = -0.05555555556

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 = -0.05555555556 + 30.25

Reorder the terms:
30.25 + -11x + x2 = -0.05555555556 + 30.25

Combine like terms: -0.05555555556 + 30.25 = 30.19444444444
30.25 + -11x + x2 = 30.19444444444

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 30.19444444444

Calculate the square root of the right side: 5.494947174

Break this problem into two subproblems by setting 
(x + -5.5) equal to 5.494947174 and -5.494947174.

Subproblem 1

x + -5.5 = 5.494947174 Simplifying x + -5.5 = 5.494947174 Reorder the terms: -5.5 + x = 5.494947174 Solving -5.5 + x = 5.494947174 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 = 5.494947174 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 5.494947174 + 5.5 x = 5.494947174 + 5.5 Combine like terms: 5.494947174 + 5.5 = 10.994947174 x = 10.994947174 Simplifying x = 10.994947174

Subproblem 2

x + -5.5 = -5.494947174 Simplifying x + -5.5 = -5.494947174 Reorder the terms: -5.5 + x = -5.494947174 Solving -5.5 + x = -5.494947174 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 = -5.494947174 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -5.494947174 + 5.5 x = -5.494947174 + 5.5 Combine like terms: -5.494947174 + 5.5 = 0.005052826 x = 0.005052826 Simplifying x = 0.005052826

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.994947174, 0.005052826}

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