x^2-11x+23=0

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Solution for x^2-11x+23=0 equation:


Simplifying
x2 + -11x + 23 = 0

Reorder the terms:
23 + -11x + x2 = 0

Solving
23 + -11x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-23' to each side of the equation.
23 + -11x + -23 + x2 = 0 + -23

Reorder the terms:
23 + -23 + -11x + x2 = 0 + -23

Combine like terms: 23 + -23 = 0
0 + -11x + x2 = 0 + -23
-11x + x2 = 0 + -23

Combine like terms: 0 + -23 = -23
-11x + x2 = -23

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = -23 + 30.25

Reorder the terms:
30.25 + -11x + x2 = -23 + 30.25

Combine like terms: -23 + 30.25 = 7.25
30.25 + -11x + x2 = 7.25

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 7.25

Calculate the square root of the right side: 2.692582404

Break this problem into two subproblems by setting 
(x + -5.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

x + -5.5 = 2.692582404 Simplifying x + -5.5 = 2.692582404 Reorder the terms: -5.5 + x = 2.692582404 Solving -5.5 + x = 2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 2.692582404 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 2.692582404 + 5.5 x = 2.692582404 + 5.5 Combine like terms: 2.692582404 + 5.5 = 8.192582404 x = 8.192582404 Simplifying x = 8.192582404

Subproblem 2

x + -5.5 = -2.692582404 Simplifying x + -5.5 = -2.692582404 Reorder the terms: -5.5 + x = -2.692582404 Solving -5.5 + x = -2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -2.692582404 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -2.692582404 + 5.5 x = -2.692582404 + 5.5 Combine like terms: -2.692582404 + 5.5 = 2.807417596 x = 2.807417596 Simplifying x = 2.807417596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.192582404, 2.807417596}

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