2x^2-46x+13=0

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Solution for 2x^2-46x+13=0 equation:


Simplifying
2x2 + -46x + 13 = 0

Reorder the terms:
13 + -46x + 2x2 = 0

Solving
13 + -46x + 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'.
6.5 + -23x + x2 = 0

Move the constant term to the right:

Add '-6.5' to each side of the equation.
6.5 + -23x + -6.5 + x2 = 0 + -6.5

Reorder the terms:
6.5 + -6.5 + -23x + x2 = 0 + -6.5

Combine like terms: 6.5 + -6.5 = 0.0
0.0 + -23x + x2 = 0 + -6.5
-23x + x2 = 0 + -6.5

Combine like terms: 0 + -6.5 = -6.5
-23x + x2 = -6.5

The x term is -23x.  Take half its coefficient (-11.5).
Square it (132.25) and add it to both sides.

Add '132.25' to each side of the equation.
-23x + 132.25 + x2 = -6.5 + 132.25

Reorder the terms:
132.25 + -23x + x2 = -6.5 + 132.25

Combine like terms: -6.5 + 132.25 = 125.75
132.25 + -23x + x2 = 125.75

Factor a perfect square on the left side:
(x + -11.5)(x + -11.5) = 125.75

Calculate the square root of the right side: 11.213830746

Break this problem into two subproblems by setting 
(x + -11.5) equal to 11.213830746 and -11.213830746.

Subproblem 1

x + -11.5 = 11.213830746 Simplifying x + -11.5 = 11.213830746 Reorder the terms: -11.5 + x = 11.213830746 Solving -11.5 + x = 11.213830746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.5' to each side of the equation. -11.5 + 11.5 + x = 11.213830746 + 11.5 Combine like terms: -11.5 + 11.5 = 0.0 0.0 + x = 11.213830746 + 11.5 x = 11.213830746 + 11.5 Combine like terms: 11.213830746 + 11.5 = 22.713830746 x = 22.713830746 Simplifying x = 22.713830746

Subproblem 2

x + -11.5 = -11.213830746 Simplifying x + -11.5 = -11.213830746 Reorder the terms: -11.5 + x = -11.213830746 Solving -11.5 + x = -11.213830746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.5' to each side of the equation. -11.5 + 11.5 + x = -11.213830746 + 11.5 Combine like terms: -11.5 + 11.5 = 0.0 0.0 + x = -11.213830746 + 11.5 x = -11.213830746 + 11.5 Combine like terms: -11.213830746 + 11.5 = 0.286169254 x = 0.286169254 Simplifying x = 0.286169254

Solution

The solution to the problem is based on the solutions from the subproblems. x = {22.713830746, 0.286169254}

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