3x^2-80x+80=

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Solution for 3x^2-80x+80= equation:


Simplifying
3x2 + -80x + 80 = 0

Reorder the terms:
80 + -80x + 3x2 = 0

Solving
80 + -80x + 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'.
26.66666667 + -26.66666667x + x2 = 0

Move the constant term to the right:

Add '-26.66666667' to each side of the equation.
26.66666667 + -26.66666667x + -26.66666667 + x2 = 0 + -26.66666667

Reorder the terms:
26.66666667 + -26.66666667 + -26.66666667x + x2 = 0 + -26.66666667

Combine like terms: 26.66666667 + -26.66666667 = 0.00000000
0.00000000 + -26.66666667x + x2 = 0 + -26.66666667
-26.66666667x + x2 = 0 + -26.66666667

Combine like terms: 0 + -26.66666667 = -26.66666667
-26.66666667x + x2 = -26.66666667

The x term is -26.66666667x.  Take half its coefficient (-13.33333334).
Square it (177.7777780) and add it to both sides.

Add '177.7777780' to each side of the equation.
-26.66666667x + 177.7777780 + x2 = -26.66666667 + 177.7777780

Reorder the terms:
177.7777780 + -26.66666667x + x2 = -26.66666667 + 177.7777780

Combine like terms: -26.66666667 + 177.7777780 = 151.11111133
177.7777780 + -26.66666667x + x2 = 151.11111133

Factor a perfect square on the left side:
(x + -13.33333334)(x + -13.33333334) = 151.11111133

Calculate the square root of the right side: 12.292725952

Break this problem into two subproblems by setting 
(x + -13.33333334) equal to 12.292725952 and -12.292725952.

Subproblem 1

x + -13.33333334 = 12.292725952 Simplifying x + -13.33333334 = 12.292725952 Reorder the terms: -13.33333334 + x = 12.292725952 Solving -13.33333334 + x = 12.292725952 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '13.33333334' to each side of the equation. -13.33333334 + 13.33333334 + x = 12.292725952 + 13.33333334 Combine like terms: -13.33333334 + 13.33333334 = 0.00000000 0.00000000 + x = 12.292725952 + 13.33333334 x = 12.292725952 + 13.33333334 Combine like terms: 12.292725952 + 13.33333334 = 25.626059292 x = 25.626059292 Simplifying x = 25.626059292

Subproblem 2

x + -13.33333334 = -12.292725952 Simplifying x + -13.33333334 = -12.292725952 Reorder the terms: -13.33333334 + x = -12.292725952 Solving -13.33333334 + x = -12.292725952 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '13.33333334' to each side of the equation. -13.33333334 + 13.33333334 + x = -12.292725952 + 13.33333334 Combine like terms: -13.33333334 + 13.33333334 = 0.00000000 0.00000000 + x = -12.292725952 + 13.33333334 x = -12.292725952 + 13.33333334 Combine like terms: -12.292725952 + 13.33333334 = 1.040607388 x = 1.040607388 Simplifying x = 1.040607388

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.626059292, 1.040607388}

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