2x^2=19x+23

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Solution for 2x^2=19x+23 equation:


Simplifying
2x2 = 19x + 23

Reorder the terms:
2x2 = 23 + 19x

Solving
2x2 = 23 + 19x

Solving for variable 'x'.

Reorder the terms:
-23 + -19x + 2x2 = 23 + 19x + -23 + -19x

Reorder the terms:
-23 + -19x + 2x2 = 23 + -23 + 19x + -19x

Combine like terms: 23 + -23 = 0
-23 + -19x + 2x2 = 0 + 19x + -19x
-23 + -19x + 2x2 = 19x + -19x

Combine like terms: 19x + -19x = 0
-23 + -19x + 2x2 = 0

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

Divide each side by '2'.
-11.5 + -9.5x + x2 = 0

Move the constant term to the right:

Add '11.5' to each side of the equation.
-11.5 + -9.5x + 11.5 + x2 = 0 + 11.5

Reorder the terms:
-11.5 + 11.5 + -9.5x + x2 = 0 + 11.5

Combine like terms: -11.5 + 11.5 = 0.0
0.0 + -9.5x + x2 = 0 + 11.5
-9.5x + x2 = 0 + 11.5

Combine like terms: 0 + 11.5 = 11.5
-9.5x + x2 = 11.5

The x term is -9.5x.  Take half its coefficient (-4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
-9.5x + 22.5625 + x2 = 11.5 + 22.5625

Reorder the terms:
22.5625 + -9.5x + x2 = 11.5 + 22.5625

Combine like terms: 11.5 + 22.5625 = 34.0625
22.5625 + -9.5x + x2 = 34.0625

Factor a perfect square on the left side:
(x + -4.75)(x + -4.75) = 34.0625

Calculate the square root of the right side: 5.836308765

Break this problem into two subproblems by setting 
(x + -4.75) equal to 5.836308765 and -5.836308765.

Subproblem 1

x + -4.75 = 5.836308765 Simplifying x + -4.75 = 5.836308765 Reorder the terms: -4.75 + x = 5.836308765 Solving -4.75 + x = 5.836308765 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = 5.836308765 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = 5.836308765 + 4.75 x = 5.836308765 + 4.75 Combine like terms: 5.836308765 + 4.75 = 10.586308765 x = 10.586308765 Simplifying x = 10.586308765

Subproblem 2

x + -4.75 = -5.836308765 Simplifying x + -4.75 = -5.836308765 Reorder the terms: -4.75 + x = -5.836308765 Solving -4.75 + x = -5.836308765 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = -5.836308765 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = -5.836308765 + 4.75 x = -5.836308765 + 4.75 Combine like terms: -5.836308765 + 4.75 = -1.086308765 x = -1.086308765 Simplifying x = -1.086308765

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.586308765, -1.086308765}

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