3x^2-34x+54=0

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Solution for 3x^2-34x+54=0 equation:


Simplifying
3x2 + -34x + 54 = 0

Reorder the terms:
54 + -34x + 3x2 = 0

Solving
54 + -34x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
18 + -11.33333333x + x2 = 0

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + -11.33333333x + -18 + x2 = 0 + -18

Reorder the terms:
18 + -18 + -11.33333333x + x2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -11.33333333x + x2 = 0 + -18
-11.33333333x + x2 = 0 + -18

Combine like terms: 0 + -18 = -18
-11.33333333x + x2 = -18

The x term is -11.33333333x.  Take half its coefficient (-5.666666665).
Square it (32.11111109) and add it to both sides.

Add '32.11111109' to each side of the equation.
-11.33333333x + 32.11111109 + x2 = -18 + 32.11111109

Reorder the terms:
32.11111109 + -11.33333333x + x2 = -18 + 32.11111109

Combine like terms: -18 + 32.11111109 = 14.11111109
32.11111109 + -11.33333333x + x2 = 14.11111109

Factor a perfect square on the left side:
(x + -5.666666665)(x + -5.666666665) = 14.11111109

Calculate the square root of the right side: 3.756475887

Break this problem into two subproblems by setting 
(x + -5.666666665) equal to 3.756475887 and -3.756475887.

Subproblem 1

x + -5.666666665 = 3.756475887 Simplifying x + -5.666666665 = 3.756475887 Reorder the terms: -5.666666665 + x = 3.756475887 Solving -5.666666665 + x = 3.756475887 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.666666665' to each side of the equation. -5.666666665 + 5.666666665 + x = 3.756475887 + 5.666666665 Combine like terms: -5.666666665 + 5.666666665 = 0.000000000 0.000000000 + x = 3.756475887 + 5.666666665 x = 3.756475887 + 5.666666665 Combine like terms: 3.756475887 + 5.666666665 = 9.423142552 x = 9.423142552 Simplifying x = 9.423142552

Subproblem 2

x + -5.666666665 = -3.756475887 Simplifying x + -5.666666665 = -3.756475887 Reorder the terms: -5.666666665 + x = -3.756475887 Solving -5.666666665 + x = -3.756475887 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.666666665' to each side of the equation. -5.666666665 + 5.666666665 + x = -3.756475887 + 5.666666665 Combine like terms: -5.666666665 + 5.666666665 = 0.000000000 0.000000000 + x = -3.756475887 + 5.666666665 x = -3.756475887 + 5.666666665 Combine like terms: -3.756475887 + 5.666666665 = 1.910190778 x = 1.910190778 Simplifying x = 1.910190778

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.423142552, 1.910190778}

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