12x^2+8x=1

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Solution for 12x^2+8x=1 equation:


Simplifying
12x2 + 8x = 1

Reorder the terms:
8x + 12x2 = 1

Solving
8x + 12x2 = 1

Solving for variable 'x'.

Reorder the terms:
-1 + 8x + 12x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + 8x + 12x2 = 0

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

Divide each side by '12'.
-0.08333333333 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '0.08333333333' to each side of the equation.
-0.08333333333 + 0.6666666667x + 0.08333333333 + x2 = 0 + 0.08333333333

Reorder the terms:
-0.08333333333 + 0.08333333333 + 0.6666666667x + x2 = 0 + 0.08333333333

Combine like terms: -0.08333333333 + 0.08333333333 = 0.00000000000
0.00000000000 + 0.6666666667x + x2 = 0 + 0.08333333333
0.6666666667x + x2 = 0 + 0.08333333333

Combine like terms: 0 + 0.08333333333 = 0.08333333333
0.6666666667x + x2 = 0.08333333333

The x term is 0.6666666667x.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667x + 0.1111111112 + x2 = 0.08333333333 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = 0.08333333333 + 0.1111111112

Combine like terms: 0.08333333333 + 0.1111111112 = 0.19444444453
0.1111111112 + 0.6666666667x + x2 = 0.19444444453

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = 0.19444444453

Calculate the square root of the right side: 0.440958552

Break this problem into two subproblems by setting 
(x + 0.3333333334) equal to 0.440958552 and -0.440958552.

Subproblem 1

x + 0.3333333334 = 0.440958552 Simplifying x + 0.3333333334 = 0.440958552 Reorder the terms: 0.3333333334 + x = 0.440958552 Solving 0.3333333334 + x = 0.440958552 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = 0.440958552 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = 0.440958552 + -0.3333333334 x = 0.440958552 + -0.3333333334 Combine like terms: 0.440958552 + -0.3333333334 = 0.1076252186 x = 0.1076252186 Simplifying x = 0.1076252186

Subproblem 2

x + 0.3333333334 = -0.440958552 Simplifying x + 0.3333333334 = -0.440958552 Reorder the terms: 0.3333333334 + x = -0.440958552 Solving 0.3333333334 + x = -0.440958552 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = -0.440958552 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = -0.440958552 + -0.3333333334 x = -0.440958552 + -0.3333333334 Combine like terms: -0.440958552 + -0.3333333334 = -0.7742918854 x = -0.7742918854 Simplifying x = -0.7742918854

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1076252186, -0.7742918854}

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