3(2x+1)2x-1=

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Solution for 3(2x+1)2x-1= equation:


Simplifying
3(2x + 1) * 2x + -1 = 0

Reorder the terms:
3(1 + 2x) * 2x + -1 = 0

Reorder the terms for easier multiplication:
3 * 2x(1 + 2x) + -1 = 0

Multiply 3 * 2
6x(1 + 2x) + -1 = 0
(1 * 6x + 2x * 6x) + -1 = 0
(6x + 12x2) + -1 = 0

Reorder the terms:
-1 + 6x + 12x2 = 0

Solving
-1 + 6x + 12x2 = 0

Solving for variable 'x'.

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

Divide each side by '12'.
-0.08333333333 + 0.5x + x2 = 0

Move the constant term to the right:

Add '0.08333333333' to each side of the equation.
-0.08333333333 + 0.5x + 0.08333333333 + x2 = 0 + 0.08333333333

Reorder the terms:
-0.08333333333 + 0.08333333333 + 0.5x + x2 = 0 + 0.08333333333

Combine like terms: -0.08333333333 + 0.08333333333 = 0.00000000000
0.00000000000 + 0.5x + x2 = 0 + 0.08333333333
0.5x + x2 = 0 + 0.08333333333

Combine like terms: 0 + 0.08333333333 = 0.08333333333
0.5x + x2 = 0.08333333333

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = 0.08333333333 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 0.08333333333 + 0.0625

Combine like terms: 0.08333333333 + 0.0625 = 0.14583333333
0.0625 + 0.5x + x2 = 0.14583333333

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 0.14583333333

Calculate the square root of the right side: 0.381881308

Break this problem into two subproblems by setting 
(x + 0.25) equal to 0.381881308 and -0.381881308.

Subproblem 1

x + 0.25 = 0.381881308 Simplifying x + 0.25 = 0.381881308 Reorder the terms: 0.25 + x = 0.381881308 Solving 0.25 + x = 0.381881308 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 0.381881308 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 0.381881308 + -0.25 x = 0.381881308 + -0.25 Combine like terms: 0.381881308 + -0.25 = 0.131881308 x = 0.131881308 Simplifying x = 0.131881308

Subproblem 2

x + 0.25 = -0.381881308 Simplifying x + 0.25 = -0.381881308 Reorder the terms: 0.25 + x = -0.381881308 Solving 0.25 + x = -0.381881308 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -0.381881308 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -0.381881308 + -0.25 x = -0.381881308 + -0.25 Combine like terms: -0.381881308 + -0.25 = -0.631881308 x = -0.631881308 Simplifying x = -0.631881308

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.131881308, -0.631881308}

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