16x^2+2x-1=0

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Solution for 16x^2+2x-1=0 equation:


Simplifying
16x2 + 2x + -1 = 0

Reorder the terms:
-1 + 2x + 16x2 = 0

Solving
-1 + 2x + 16x2 = 0

Solving for variable 'x'.

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

Divide each side by '16'.
-0.0625 + 0.125x + x2 = 0

Move the constant term to the right:

Add '0.0625' to each side of the equation.
-0.0625 + 0.125x + 0.0625 + x2 = 0 + 0.0625

Reorder the terms:
-0.0625 + 0.0625 + 0.125x + x2 = 0 + 0.0625

Combine like terms: -0.0625 + 0.0625 = 0.0000
0.0000 + 0.125x + x2 = 0 + 0.0625
0.125x + x2 = 0 + 0.0625

Combine like terms: 0 + 0.0625 = 0.0625
0.125x + x2 = 0.0625

The x term is 0.125x.  Take half its coefficient (0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
0.125x + 0.00390625 + x2 = 0.0625 + 0.00390625

Reorder the terms:
0.00390625 + 0.125x + x2 = 0.0625 + 0.00390625

Combine like terms: 0.0625 + 0.00390625 = 0.06640625
0.00390625 + 0.125x + x2 = 0.06640625

Factor a perfect square on the left side:
(x + 0.0625)(x + 0.0625) = 0.06640625

Calculate the square root of the right side: 0.257694102

Break this problem into two subproblems by setting 
(x + 0.0625) equal to 0.257694102 and -0.257694102.

Subproblem 1

x + 0.0625 = 0.257694102 Simplifying x + 0.0625 = 0.257694102 Reorder the terms: 0.0625 + x = 0.257694102 Solving 0.0625 + x = 0.257694102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + x = 0.257694102 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + x = 0.257694102 + -0.0625 x = 0.257694102 + -0.0625 Combine like terms: 0.257694102 + -0.0625 = 0.195194102 x = 0.195194102 Simplifying x = 0.195194102

Subproblem 2

x + 0.0625 = -0.257694102 Simplifying x + 0.0625 = -0.257694102 Reorder the terms: 0.0625 + x = -0.257694102 Solving 0.0625 + x = -0.257694102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + x = -0.257694102 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + x = -0.257694102 + -0.0625 x = -0.257694102 + -0.0625 Combine like terms: -0.257694102 + -0.0625 = -0.320194102 x = -0.320194102 Simplifying x = -0.320194102

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.195194102, -0.320194102}

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