3x^2-52x+144=0

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Solution for 3x^2-52x+144=0 equation:


Simplifying
3x2 + -52x + 144 = 0

Reorder the terms:
144 + -52x + 3x2 = 0

Solving
144 + -52x + 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'.
48 + -17.33333333x + x2 = 0

Move the constant term to the right:

Add '-48' to each side of the equation.
48 + -17.33333333x + -48 + x2 = 0 + -48

Reorder the terms:
48 + -48 + -17.33333333x + x2 = 0 + -48

Combine like terms: 48 + -48 = 0
0 + -17.33333333x + x2 = 0 + -48
-17.33333333x + x2 = 0 + -48

Combine like terms: 0 + -48 = -48
-17.33333333x + x2 = -48

The x term is -17.33333333x.  Take half its coefficient (-8.666666665).
Square it (75.11111108) and add it to both sides.

Add '75.11111108' to each side of the equation.
-17.33333333x + 75.11111108 + x2 = -48 + 75.11111108

Reorder the terms:
75.11111108 + -17.33333333x + x2 = -48 + 75.11111108

Combine like terms: -48 + 75.11111108 = 27.11111108
75.11111108 + -17.33333333x + x2 = 27.11111108

Factor a perfect square on the left side:
(x + -8.666666665)(x + -8.666666665) = 27.11111108

Calculate the square root of the right side: 5.206833114

Break this problem into two subproblems by setting 
(x + -8.666666665) equal to 5.206833114 and -5.206833114.

Subproblem 1

x + -8.666666665 = 5.206833114 Simplifying x + -8.666666665 = 5.206833114 Reorder the terms: -8.666666665 + x = 5.206833114 Solving -8.666666665 + x = 5.206833114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.666666665' to each side of the equation. -8.666666665 + 8.666666665 + x = 5.206833114 + 8.666666665 Combine like terms: -8.666666665 + 8.666666665 = 0.000000000 0.000000000 + x = 5.206833114 + 8.666666665 x = 5.206833114 + 8.666666665 Combine like terms: 5.206833114 + 8.666666665 = 13.873499779 x = 13.873499779 Simplifying x = 13.873499779

Subproblem 2

x + -8.666666665 = -5.206833114 Simplifying x + -8.666666665 = -5.206833114 Reorder the terms: -8.666666665 + x = -5.206833114 Solving -8.666666665 + x = -5.206833114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.666666665' to each side of the equation. -8.666666665 + 8.666666665 + x = -5.206833114 + 8.666666665 Combine like terms: -8.666666665 + 8.666666665 = 0.000000000 0.000000000 + x = -5.206833114 + 8.666666665 x = -5.206833114 + 8.666666665 Combine like terms: -5.206833114 + 8.666666665 = 3.459833551 x = 3.459833551 Simplifying x = 3.459833551

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.873499779, 3.459833551}

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