(8x-1)(2x+1)=3x

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Solution for (8x-1)(2x+1)=3x equation:


Simplifying
(8x + -1)(2x + 1) = 3x

Reorder the terms:
(-1 + 8x)(2x + 1) = 3x

Reorder the terms:
(-1 + 8x)(1 + 2x) = 3x

Multiply (-1 + 8x) * (1 + 2x)
(-1(1 + 2x) + 8x * (1 + 2x)) = 3x
((1 * -1 + 2x * -1) + 8x * (1 + 2x)) = 3x
((-1 + -2x) + 8x * (1 + 2x)) = 3x
(-1 + -2x + (1 * 8x + 2x * 8x)) = 3x
(-1 + -2x + (8x + 16x2)) = 3x

Combine like terms: -2x + 8x = 6x
(-1 + 6x + 16x2) = 3x

Solving
-1 + 6x + 16x2 = 3x

Solving for variable 'x'.

Reorder the terms:
-1 + 6x + -3x + 16x2 = 3x + -3x

Combine like terms: 6x + -3x = 3x
-1 + 3x + 16x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-1 + 3x + 16x2 = 0

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

Divide each side by '16'.
-0.0625 + 0.1875x + x2 = 0

Move the constant term to the right:

Add '0.0625' to each side of the equation.
-0.0625 + 0.1875x + 0.0625 + x2 = 0 + 0.0625

Reorder the terms:
-0.0625 + 0.0625 + 0.1875x + x2 = 0 + 0.0625

Combine like terms: -0.0625 + 0.0625 = 0.0000
0.0000 + 0.1875x + x2 = 0 + 0.0625
0.1875x + x2 = 0 + 0.0625

Combine like terms: 0 + 0.0625 = 0.0625
0.1875x + x2 = 0.0625

The x term is 0.1875x.  Take half its coefficient (0.09375).
Square it (0.0087890625) and add it to both sides.

Add '0.0087890625' to each side of the equation.
0.1875x + 0.0087890625 + x2 = 0.0625 + 0.0087890625

Reorder the terms:
0.0087890625 + 0.1875x + x2 = 0.0625 + 0.0087890625

Combine like terms: 0.0625 + 0.0087890625 = 0.0712890625
0.0087890625 + 0.1875x + x2 = 0.0712890625

Factor a perfect square on the left side:
(x + 0.09375)(x + 0.09375) = 0.0712890625

Calculate the square root of the right side: 0.267000117

Break this problem into two subproblems by setting 
(x + 0.09375) equal to 0.267000117 and -0.267000117.

Subproblem 1

x + 0.09375 = 0.267000117 Simplifying x + 0.09375 = 0.267000117 Reorder the terms: 0.09375 + x = 0.267000117 Solving 0.09375 + x = 0.267000117 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.09375' to each side of the equation. 0.09375 + -0.09375 + x = 0.267000117 + -0.09375 Combine like terms: 0.09375 + -0.09375 = 0.00000 0.00000 + x = 0.267000117 + -0.09375 x = 0.267000117 + -0.09375 Combine like terms: 0.267000117 + -0.09375 = 0.173250117 x = 0.173250117 Simplifying x = 0.173250117

Subproblem 2

x + 0.09375 = -0.267000117 Simplifying x + 0.09375 = -0.267000117 Reorder the terms: 0.09375 + x = -0.267000117 Solving 0.09375 + x = -0.267000117 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.09375' to each side of the equation. 0.09375 + -0.09375 + x = -0.267000117 + -0.09375 Combine like terms: 0.09375 + -0.09375 = 0.00000 0.00000 + x = -0.267000117 + -0.09375 x = -0.267000117 + -0.09375 Combine like terms: -0.267000117 + -0.09375 = -0.360750117 x = -0.360750117 Simplifying x = -0.360750117

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.173250117, -0.360750117}

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