81x^2-108x+29=0

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Solution for 81x^2-108x+29=0 equation:


Simplifying
81x2 + -108x + 29 = 0

Reorder the terms:
29 + -108x + 81x2 = 0

Solving
29 + -108x + 81x2 = 0

Solving for variable 'x'.

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

Divide each side by '81'.
0.3580246914 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '-0.3580246914' to each side of the equation.
0.3580246914 + -1.333333333x + -0.3580246914 + x2 = 0 + -0.3580246914

Reorder the terms:
0.3580246914 + -0.3580246914 + -1.333333333x + x2 = 0 + -0.3580246914

Combine like terms: 0.3580246914 + -0.3580246914 = 0.0000000000
0.0000000000 + -1.333333333x + x2 = 0 + -0.3580246914
-1.333333333x + x2 = 0 + -0.3580246914

Combine like terms: 0 + -0.3580246914 = -0.3580246914
-1.333333333x + x2 = -0.3580246914

The x term is -1.333333333x.  Take half its coefficient (-0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
-1.333333333x + 0.4444444442 + x2 = -0.3580246914 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = -0.3580246914 + 0.4444444442

Combine like terms: -0.3580246914 + 0.4444444442 = 0.0864197528
0.4444444442 + -1.333333333x + x2 = 0.0864197528

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = 0.0864197528

Calculate the square root of the right side: 0.293972367

Break this problem into two subproblems by setting 
(x + -0.6666666665) equal to 0.293972367 and -0.293972367.

Subproblem 1

x + -0.6666666665 = 0.293972367 Simplifying x + -0.6666666665 = 0.293972367 Reorder the terms: -0.6666666665 + x = 0.293972367 Solving -0.6666666665 + x = 0.293972367 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = 0.293972367 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = 0.293972367 + 0.6666666665 x = 0.293972367 + 0.6666666665 Combine like terms: 0.293972367 + 0.6666666665 = 0.9606390335 x = 0.9606390335 Simplifying x = 0.9606390335

Subproblem 2

x + -0.6666666665 = -0.293972367 Simplifying x + -0.6666666665 = -0.293972367 Reorder the terms: -0.6666666665 + x = -0.293972367 Solving -0.6666666665 + x = -0.293972367 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = -0.293972367 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = -0.293972367 + 0.6666666665 x = -0.293972367 + 0.6666666665 Combine like terms: -0.293972367 + 0.6666666665 = 0.3726942995 x = 0.3726942995 Simplifying x = 0.3726942995

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9606390335, 0.3726942995}

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