3x-4x-3=12x^2-6

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Solution for 3x-4x-3=12x^2-6 equation:


Simplifying
3x + -4x + -3 = 12x2 + -6

Reorder the terms:
-3 + 3x + -4x = 12x2 + -6

Combine like terms: 3x + -4x = -1x
-3 + -1x = 12x2 + -6

Reorder the terms:
-3 + -1x = -6 + 12x2

Solving
-3 + -1x = -6 + 12x2

Solving for variable 'x'.

Reorder the terms:
-3 + 6 + -1x + -12x2 = -6 + 12x2 + 6 + -12x2

Combine like terms: -3 + 6 = 3
3 + -1x + -12x2 = -6 + 12x2 + 6 + -12x2

Reorder the terms:
3 + -1x + -12x2 = -6 + 6 + 12x2 + -12x2

Combine like terms: -6 + 6 = 0
3 + -1x + -12x2 = 0 + 12x2 + -12x2
3 + -1x + -12x2 = 12x2 + -12x2

Combine like terms: 12x2 + -12x2 = 0
3 + -1x + -12x2 = 0

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

Divide each side by '-12'.
-0.25 + 0.08333333333x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + 0.08333333333x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + 0.08333333333x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + 0.08333333333x + x2 = 0 + 0.25
0.08333333333x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
0.08333333333x + x2 = 0.25

The x term is 0.08333333333x.  Take half its coefficient (0.04166666667).
Square it (0.001736111111) and add it to both sides.

Add '0.001736111111' to each side of the equation.
0.08333333333x + 0.001736111111 + x2 = 0.25 + 0.001736111111

Reorder the terms:
0.001736111111 + 0.08333333333x + x2 = 0.25 + 0.001736111111

Combine like terms: 0.25 + 0.001736111111 = 0.251736111111
0.001736111111 + 0.08333333333x + x2 = 0.251736111111

Factor a perfect square on the left side:
(x + 0.04166666667)(x + 0.04166666667) = 0.251736111111

Calculate the square root of the right side: 0.501733107

Break this problem into two subproblems by setting 
(x + 0.04166666667) equal to 0.501733107 and -0.501733107.

Subproblem 1

x + 0.04166666667 = 0.501733107 Simplifying x + 0.04166666667 = 0.501733107 Reorder the terms: 0.04166666667 + x = 0.501733107 Solving 0.04166666667 + x = 0.501733107 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.04166666667' to each side of the equation. 0.04166666667 + -0.04166666667 + x = 0.501733107 + -0.04166666667 Combine like terms: 0.04166666667 + -0.04166666667 = 0.00000000000 0.00000000000 + x = 0.501733107 + -0.04166666667 x = 0.501733107 + -0.04166666667 Combine like terms: 0.501733107 + -0.04166666667 = 0.46006644033 x = 0.46006644033 Simplifying x = 0.46006644033

Subproblem 2

x + 0.04166666667 = -0.501733107 Simplifying x + 0.04166666667 = -0.501733107 Reorder the terms: 0.04166666667 + x = -0.501733107 Solving 0.04166666667 + x = -0.501733107 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.04166666667' to each side of the equation. 0.04166666667 + -0.04166666667 + x = -0.501733107 + -0.04166666667 Combine like terms: 0.04166666667 + -0.04166666667 = 0.00000000000 0.00000000000 + x = -0.501733107 + -0.04166666667 x = -0.501733107 + -0.04166666667 Combine like terms: -0.501733107 + -0.04166666667 = -0.54339977367 x = -0.54339977367 Simplifying x = -0.54339977367

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.46006644033, -0.54339977367}

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