2x^2-58x+159=0

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Solution for 2x^2-58x+159=0 equation:


Simplifying
2x2 + -58x + 159 = 0

Reorder the terms:
159 + -58x + 2x2 = 0

Solving
159 + -58x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
79.5 + -29x + x2 = 0

Move the constant term to the right:

Add '-79.5' to each side of the equation.
79.5 + -29x + -79.5 + x2 = 0 + -79.5

Reorder the terms:
79.5 + -79.5 + -29x + x2 = 0 + -79.5

Combine like terms: 79.5 + -79.5 = 0.0
0.0 + -29x + x2 = 0 + -79.5
-29x + x2 = 0 + -79.5

Combine like terms: 0 + -79.5 = -79.5
-29x + x2 = -79.5

The x term is -29x.  Take half its coefficient (-14.5).
Square it (210.25) and add it to both sides.

Add '210.25' to each side of the equation.
-29x + 210.25 + x2 = -79.5 + 210.25

Reorder the terms:
210.25 + -29x + x2 = -79.5 + 210.25

Combine like terms: -79.5 + 210.25 = 130.75
210.25 + -29x + x2 = 130.75

Factor a perfect square on the left side:
(x + -14.5)(x + -14.5) = 130.75

Calculate the square root of the right side: 11.434596626

Break this problem into two subproblems by setting 
(x + -14.5) equal to 11.434596626 and -11.434596626.

Subproblem 1

x + -14.5 = 11.434596626 Simplifying x + -14.5 = 11.434596626 Reorder the terms: -14.5 + x = 11.434596626 Solving -14.5 + x = 11.434596626 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14.5' to each side of the equation. -14.5 + 14.5 + x = 11.434596626 + 14.5 Combine like terms: -14.5 + 14.5 = 0.0 0.0 + x = 11.434596626 + 14.5 x = 11.434596626 + 14.5 Combine like terms: 11.434596626 + 14.5 = 25.934596626 x = 25.934596626 Simplifying x = 25.934596626

Subproblem 2

x + -14.5 = -11.434596626 Simplifying x + -14.5 = -11.434596626 Reorder the terms: -14.5 + x = -11.434596626 Solving -14.5 + x = -11.434596626 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14.5' to each side of the equation. -14.5 + 14.5 + x = -11.434596626 + 14.5 Combine like terms: -14.5 + 14.5 = 0.0 0.0 + x = -11.434596626 + 14.5 x = -11.434596626 + 14.5 Combine like terms: -11.434596626 + 14.5 = 3.065403374 x = 3.065403374 Simplifying x = 3.065403374

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.934596626, 3.065403374}

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