2x^2-36x+23=0

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Solution for 2x^2-36x+23=0 equation:


Simplifying
2x2 + -36x + 23 = 0

Reorder the terms:
23 + -36x + 2x2 = 0

Solving
23 + -36x + 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'.
11.5 + -18x + x2 = 0

Move the constant term to the right:

Add '-11.5' to each side of the equation.
11.5 + -18x + -11.5 + x2 = 0 + -11.5

Reorder the terms:
11.5 + -11.5 + -18x + x2 = 0 + -11.5

Combine like terms: 11.5 + -11.5 = 0.0
0.0 + -18x + x2 = 0 + -11.5
-18x + x2 = 0 + -11.5

Combine like terms: 0 + -11.5 = -11.5
-18x + x2 = -11.5

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -11.5 + 81

Reorder the terms:
81 + -18x + x2 = -11.5 + 81

Combine like terms: -11.5 + 81 = 69.5
81 + -18x + x2 = 69.5

Factor a perfect square on the left side:
(x + -9)(x + -9) = 69.5

Calculate the square root of the right side: 8.336666

Break this problem into two subproblems by setting 
(x + -9) equal to 8.336666 and -8.336666.

Subproblem 1

x + -9 = 8.336666 Simplifying x + -9 = 8.336666 Reorder the terms: -9 + x = 8.336666 Solving -9 + x = 8.336666 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 8.336666 + 9 Combine like terms: -9 + 9 = 0 0 + x = 8.336666 + 9 x = 8.336666 + 9 Combine like terms: 8.336666 + 9 = 17.336666 x = 17.336666 Simplifying x = 17.336666

Subproblem 2

x + -9 = -8.336666 Simplifying x + -9 = -8.336666 Reorder the terms: -9 + x = -8.336666 Solving -9 + x = -8.336666 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -8.336666 + 9 Combine like terms: -9 + 9 = 0 0 + x = -8.336666 + 9 x = -8.336666 + 9 Combine like terms: -8.336666 + 9 = 0.663334 x = 0.663334 Simplifying x = 0.663334

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.336666, 0.663334}

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