6x+6x^2-19=0

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Solution for 6x+6x^2-19=0 equation:


Simplifying
6x + 6x2 + -19 = 0

Reorder the terms:
-19 + 6x + 6x2 = 0

Solving
-19 + 6x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
-3.166666667 + x + x2 = 0

Move the constant term to the right:

Add '3.166666667' to each side of the equation.
-3.166666667 + x + 3.166666667 + x2 = 0 + 3.166666667

Reorder the terms:
-3.166666667 + 3.166666667 + x + x2 = 0 + 3.166666667

Combine like terms: -3.166666667 + 3.166666667 = 0.000000000
0.000000000 + x + x2 = 0 + 3.166666667
x + x2 = 0 + 3.166666667

Combine like terms: 0 + 3.166666667 = 3.166666667
x + x2 = 3.166666667

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 3.166666667 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 3.166666667 + 0.25

Combine like terms: 3.166666667 + 0.25 = 3.416666667
1.25 + x2 = 3.416666667

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 3.416666667

Calculate the square root of the right side: 1.848422751

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.848422751 and -1.848422751.

Subproblem 1

x + 0.5 = 1.848422751 Simplifying x + 0.5 = 1.848422751 Reorder the terms: 0.5 + x = 1.848422751 Solving 0.5 + x = 1.848422751 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.848422751 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.848422751 + -0.5 x = 1.848422751 + -0.5 Combine like terms: 1.848422751 + -0.5 = 1.348422751 x = 1.348422751 Simplifying x = 1.348422751

Subproblem 2

x + 0.5 = -1.848422751 Simplifying x + 0.5 = -1.848422751 Reorder the terms: 0.5 + x = -1.848422751 Solving 0.5 + x = -1.848422751 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.848422751 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.848422751 + -0.5 x = -1.848422751 + -0.5 Combine like terms: -1.848422751 + -0.5 = -2.348422751 x = -2.348422751 Simplifying x = -2.348422751

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.348422751, -2.348422751}

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