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

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


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

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

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

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

Combine like terms: -2x + 3x = 1x
(-1 + 1x + 6x2) = 2

Solving
-1 + 1x + 6x2 = 2

Solving for variable 'x'.

Reorder the terms:
-1 + -2 + 1x + 6x2 = 2 + -2

Combine like terms: -1 + -2 = -3
-3 + 1x + 6x2 = 2 + -2

Combine like terms: 2 + -2 = 0
-3 + 1x + 6x2 = 0

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

Divide each side by '6'.
-0.5 + 0.1666666667x + x2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + 0.1666666667x + 0.5 + x2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + 0.1666666667x + x2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 0.1666666667x + x2 = 0 + 0.5
0.1666666667x + x2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
0.1666666667x + x2 = 0.5

The x term is 0.1666666667x.  Take half its coefficient (0.08333333335).
Square it (0.006944444447) and add it to both sides.

Add '0.006944444447' to each side of the equation.
0.1666666667x + 0.006944444447 + x2 = 0.5 + 0.006944444447

Reorder the terms:
0.006944444447 + 0.1666666667x + x2 = 0.5 + 0.006944444447

Combine like terms: 0.5 + 0.006944444447 = 0.506944444447
0.006944444447 + 0.1666666667x + x2 = 0.506944444447

Factor a perfect square on the left side:
(x + 0.08333333335)(x + 0.08333333335) = 0.506944444447

Calculate the square root of the right side: 0.712000312

Break this problem into two subproblems by setting 
(x + 0.08333333335) equal to 0.712000312 and -0.712000312.

Subproblem 1

x + 0.08333333335 = 0.712000312 Simplifying x + 0.08333333335 = 0.712000312 Reorder the terms: 0.08333333335 + x = 0.712000312 Solving 0.08333333335 + x = 0.712000312 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.08333333335' to each side of the equation. 0.08333333335 + -0.08333333335 + x = 0.712000312 + -0.08333333335 Combine like terms: 0.08333333335 + -0.08333333335 = 0.00000000000 0.00000000000 + x = 0.712000312 + -0.08333333335 x = 0.712000312 + -0.08333333335 Combine like terms: 0.712000312 + -0.08333333335 = 0.62866697865 x = 0.62866697865 Simplifying x = 0.62866697865

Subproblem 2

x + 0.08333333335 = -0.712000312 Simplifying x + 0.08333333335 = -0.712000312 Reorder the terms: 0.08333333335 + x = -0.712000312 Solving 0.08333333335 + x = -0.712000312 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.08333333335' to each side of the equation. 0.08333333335 + -0.08333333335 + x = -0.712000312 + -0.08333333335 Combine like terms: 0.08333333335 + -0.08333333335 = 0.00000000000 0.00000000000 + x = -0.712000312 + -0.08333333335 x = -0.712000312 + -0.08333333335 Combine like terms: -0.712000312 + -0.08333333335 = -0.79533364535 x = -0.79533364535 Simplifying x = -0.79533364535

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.62866697865, -0.79533364535}

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