-4x(8x-2)-5x=-1

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Solution for -4x(8x-2)-5x=-1 equation:


Simplifying
-4x(8x + -2) + -5x = -1

Reorder the terms:
-4x(-2 + 8x) + -5x = -1
(-2 * -4x + 8x * -4x) + -5x = -1
(8x + -32x2) + -5x = -1

Reorder the terms:
8x + -5x + -32x2 = -1

Combine like terms: 8x + -5x = 3x
3x + -32x2 = -1

Solving
3x + -32x2 = -1

Solving for variable 'x'.

Reorder the terms:
1 + 3x + -32x2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + 3x + -32x2 = 0

Begin completing the square.  Divide all terms by
-32 the coefficient of the squared term: 

Divide each side by '-32'.
-0.03125 + -0.09375x + x2 = 0

Move the constant term to the right:

Add '0.03125' to each side of the equation.
-0.03125 + -0.09375x + 0.03125 + x2 = 0 + 0.03125

Reorder the terms:
-0.03125 + 0.03125 + -0.09375x + x2 = 0 + 0.03125

Combine like terms: -0.03125 + 0.03125 = 0.00000
0.00000 + -0.09375x + x2 = 0 + 0.03125
-0.09375x + x2 = 0 + 0.03125

Combine like terms: 0 + 0.03125 = 0.03125
-0.09375x + x2 = 0.03125

The x term is -0.09375x.  Take half its coefficient (-0.046875).
Square it (0.002197265625) and add it to both sides.

Add '0.002197265625' to each side of the equation.
-0.09375x + 0.002197265625 + x2 = 0.03125 + 0.002197265625

Reorder the terms:
0.002197265625 + -0.09375x + x2 = 0.03125 + 0.002197265625

Combine like terms: 0.03125 + 0.002197265625 = 0.033447265625
0.002197265625 + -0.09375x + x2 = 0.033447265625

Factor a perfect square on the left side:
(x + -0.046875)(x + -0.046875) = 0.033447265625

Calculate the square root of the right side: 0.182885936

Break this problem into two subproblems by setting 
(x + -0.046875) equal to 0.182885936 and -0.182885936.

Subproblem 1

x + -0.046875 = 0.182885936 Simplifying x + -0.046875 = 0.182885936 Reorder the terms: -0.046875 + x = 0.182885936 Solving -0.046875 + x = 0.182885936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.046875' to each side of the equation. -0.046875 + 0.046875 + x = 0.182885936 + 0.046875 Combine like terms: -0.046875 + 0.046875 = 0.000000 0.000000 + x = 0.182885936 + 0.046875 x = 0.182885936 + 0.046875 Combine like terms: 0.182885936 + 0.046875 = 0.229760936 x = 0.229760936 Simplifying x = 0.229760936

Subproblem 2

x + -0.046875 = -0.182885936 Simplifying x + -0.046875 = -0.182885936 Reorder the terms: -0.046875 + x = -0.182885936 Solving -0.046875 + x = -0.182885936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.046875' to each side of the equation. -0.046875 + 0.046875 + x = -0.182885936 + 0.046875 Combine like terms: -0.046875 + 0.046875 = 0.000000 0.000000 + x = -0.182885936 + 0.046875 x = -0.182885936 + 0.046875 Combine like terms: -0.182885936 + 0.046875 = -0.136010936 x = -0.136010936 Simplifying x = -0.136010936

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.229760936, -0.136010936}

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