x+2x(6x+2)=29

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Solution for x+2x(6x+2)=29 equation:


Simplifying
x + 2x(6x + 2) = 29

Reorder the terms:
x + 2x(2 + 6x) = 29
x + (2 * 2x + 6x * 2x) = 29
x + (4x + 12x2) = 29

Combine like terms: x + 4x = 5x
5x + 12x2 = 29

Solving
5x + 12x2 = 29

Solving for variable 'x'.

Reorder the terms:
-29 + 5x + 12x2 = 29 + -29

Combine like terms: 29 + -29 = 0
-29 + 5x + 12x2 = 0

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

Divide each side by '12'.
-2.416666667 + 0.4166666667x + x2 = 0

Move the constant term to the right:

Add '2.416666667' to each side of the equation.
-2.416666667 + 0.4166666667x + 2.416666667 + x2 = 0 + 2.416666667

Reorder the terms:
-2.416666667 + 2.416666667 + 0.4166666667x + x2 = 0 + 2.416666667

Combine like terms: -2.416666667 + 2.416666667 = 0.000000000
0.000000000 + 0.4166666667x + x2 = 0 + 2.416666667
0.4166666667x + x2 = 0 + 2.416666667

Combine like terms: 0 + 2.416666667 = 2.416666667
0.4166666667x + x2 = 2.416666667

The x term is 0.4166666667x.  Take half its coefficient (0.2083333334).
Square it (0.04340277781) and add it to both sides.

Add '0.04340277781' to each side of the equation.
0.4166666667x + 0.04340277781 + x2 = 2.416666667 + 0.04340277781

Reorder the terms:
0.04340277781 + 0.4166666667x + x2 = 2.416666667 + 0.04340277781

Combine like terms: 2.416666667 + 0.04340277781 = 2.46006944481
0.04340277781 + 0.4166666667x + x2 = 2.46006944481

Factor a perfect square on the left side:
(x + 0.2083333334)(x + 0.2083333334) = 2.46006944481

Calculate the square root of the right side: 1.568460852

Break this problem into two subproblems by setting 
(x + 0.2083333334) equal to 1.568460852 and -1.568460852.

Subproblem 1

x + 0.2083333334 = 1.568460852 Simplifying x + 0.2083333334 = 1.568460852 Reorder the terms: 0.2083333334 + x = 1.568460852 Solving 0.2083333334 + x = 1.568460852 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2083333334' to each side of the equation. 0.2083333334 + -0.2083333334 + x = 1.568460852 + -0.2083333334 Combine like terms: 0.2083333334 + -0.2083333334 = 0.0000000000 0.0000000000 + x = 1.568460852 + -0.2083333334 x = 1.568460852 + -0.2083333334 Combine like terms: 1.568460852 + -0.2083333334 = 1.3601275186 x = 1.3601275186 Simplifying x = 1.3601275186

Subproblem 2

x + 0.2083333334 = -1.568460852 Simplifying x + 0.2083333334 = -1.568460852 Reorder the terms: 0.2083333334 + x = -1.568460852 Solving 0.2083333334 + x = -1.568460852 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2083333334' to each side of the equation. 0.2083333334 + -0.2083333334 + x = -1.568460852 + -0.2083333334 Combine like terms: 0.2083333334 + -0.2083333334 = 0.0000000000 0.0000000000 + x = -1.568460852 + -0.2083333334 x = -1.568460852 + -0.2083333334 Combine like terms: -1.568460852 + -0.2083333334 = -1.7767941854 x = -1.7767941854 Simplifying x = -1.7767941854

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.3601275186, -1.7767941854}

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