2x(-1x+19)=27

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Solution for 2x(-1x+19)=27 equation:


Simplifying
2x(-1x + 19) = 27

Reorder the terms:
2x(19 + -1x) = 27
(19 * 2x + -1x * 2x) = 27
(38x + -2x2) = 27

Solving
38x + -2x2 = 27

Solving for variable 'x'.

Reorder the terms:
-27 + 38x + -2x2 = 27 + -27

Combine like terms: 27 + -27 = 0
-27 + 38x + -2x2 = 0

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

Divide each side by '-2'.
13.5 + -19x + x2 = 0

Move the constant term to the right:

Add '-13.5' to each side of the equation.
13.5 + -19x + -13.5 + x2 = 0 + -13.5

Reorder the terms:
13.5 + -13.5 + -19x + x2 = 0 + -13.5

Combine like terms: 13.5 + -13.5 = 0.0
0.0 + -19x + x2 = 0 + -13.5
-19x + x2 = 0 + -13.5

Combine like terms: 0 + -13.5 = -13.5
-19x + x2 = -13.5

The x term is -19x.  Take half its coefficient (-9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
-19x + 90.25 + x2 = -13.5 + 90.25

Reorder the terms:
90.25 + -19x + x2 = -13.5 + 90.25

Combine like terms: -13.5 + 90.25 = 76.75
90.25 + -19x + x2 = 76.75

Factor a perfect square on the left side:
(x + -9.5)(x + -9.5) = 76.75

Calculate the square root of the right side: 8.760707734

Break this problem into two subproblems by setting 
(x + -9.5) equal to 8.760707734 and -8.760707734.

Subproblem 1

x + -9.5 = 8.760707734 Simplifying x + -9.5 = 8.760707734 Reorder the terms: -9.5 + x = 8.760707734 Solving -9.5 + x = 8.760707734 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = 8.760707734 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = 8.760707734 + 9.5 x = 8.760707734 + 9.5 Combine like terms: 8.760707734 + 9.5 = 18.260707734 x = 18.260707734 Simplifying x = 18.260707734

Subproblem 2

x + -9.5 = -8.760707734 Simplifying x + -9.5 = -8.760707734 Reorder the terms: -9.5 + x = -8.760707734 Solving -9.5 + x = -8.760707734 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = -8.760707734 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = -8.760707734 + 9.5 x = -8.760707734 + 9.5 Combine like terms: -8.760707734 + 9.5 = 0.739292266 x = 0.739292266 Simplifying x = 0.739292266

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.260707734, 0.739292266}

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