.5x(6x-10)-2x=19-3x

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Solution for .5x(6x-10)-2x=19-3x equation:


Simplifying
0.5x(6x + -10) + -2x = 19 + -3x

Reorder the terms:
0.5x(-10 + 6x) + -2x = 19 + -3x
(-10 * 0.5x + 6x * 0.5x) + -2x = 19 + -3x
(-5x + 3x2) + -2x = 19 + -3x

Reorder the terms:
-5x + -2x + 3x2 = 19 + -3x

Combine like terms: -5x + -2x = -7x
-7x + 3x2 = 19 + -3x

Solving
-7x + 3x2 = 19 + -3x

Solving for variable 'x'.

Reorder the terms:
-19 + -7x + 3x + 3x2 = 19 + -3x + -19 + 3x

Combine like terms: -7x + 3x = -4x
-19 + -4x + 3x2 = 19 + -3x + -19 + 3x

Reorder the terms:
-19 + -4x + 3x2 = 19 + -19 + -3x + 3x

Combine like terms: 19 + -19 = 0
-19 + -4x + 3x2 = 0 + -3x + 3x
-19 + -4x + 3x2 = -3x + 3x

Combine like terms: -3x + 3x = 0
-19 + -4x + 3x2 = 0

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

Divide each side by '3'.
-6.333333333 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '6.333333333' to each side of the equation.
-6.333333333 + -1.333333333x + 6.333333333 + x2 = 0 + 6.333333333

Reorder the terms:
-6.333333333 + 6.333333333 + -1.333333333x + x2 = 0 + 6.333333333

Combine like terms: -6.333333333 + 6.333333333 = 0.000000000
0.000000000 + -1.333333333x + x2 = 0 + 6.333333333
-1.333333333x + x2 = 0 + 6.333333333

Combine like terms: 0 + 6.333333333 = 6.333333333
-1.333333333x + x2 = 6.333333333

The x term is -1.333333333x.  Take half its coefficient (-0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
-1.333333333x + 0.4444444442 + x2 = 6.333333333 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = 6.333333333 + 0.4444444442

Combine like terms: 6.333333333 + 0.4444444442 = 6.7777777772
0.4444444442 + -1.333333333x + x2 = 6.7777777772

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = 6.7777777772

Calculate the square root of the right side: 2.603416559

Break this problem into two subproblems by setting 
(x + -0.6666666665) equal to 2.603416559 and -2.603416559.

Subproblem 1

x + -0.6666666665 = 2.603416559 Simplifying x + -0.6666666665 = 2.603416559 Reorder the terms: -0.6666666665 + x = 2.603416559 Solving -0.6666666665 + x = 2.603416559 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = 2.603416559 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = 2.603416559 + 0.6666666665 x = 2.603416559 + 0.6666666665 Combine like terms: 2.603416559 + 0.6666666665 = 3.2700832255 x = 3.2700832255 Simplifying x = 3.2700832255

Subproblem 2

x + -0.6666666665 = -2.603416559 Simplifying x + -0.6666666665 = -2.603416559 Reorder the terms: -0.6666666665 + x = -2.603416559 Solving -0.6666666665 + x = -2.603416559 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = -2.603416559 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = -2.603416559 + 0.6666666665 x = -2.603416559 + 0.6666666665 Combine like terms: -2.603416559 + 0.6666666665 = -1.9367498925 x = -1.9367498925 Simplifying x = -1.9367498925

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.2700832255, -1.9367498925}

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