8b^2-16b+1=0

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Solution for 8b^2-16b+1=0 equation:


Simplifying
8b2 + -16b + 1 = 0

Reorder the terms:
1 + -16b + 8b2 = 0

Solving
1 + -16b + 8b2 = 0

Solving for variable 'b'.

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

Divide each side by '8'.
0.125 + -2b + b2 = 0

Move the constant term to the right:

Add '-0.125' to each side of the equation.
0.125 + -2b + -0.125 + b2 = 0 + -0.125

Reorder the terms:
0.125 + -0.125 + -2b + b2 = 0 + -0.125

Combine like terms: 0.125 + -0.125 = 0.000
0.000 + -2b + b2 = 0 + -0.125
-2b + b2 = 0 + -0.125

Combine like terms: 0 + -0.125 = -0.125
-2b + b2 = -0.125

The b term is -2b.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2b + 1 + b2 = -0.125 + 1

Reorder the terms:
1 + -2b + b2 = -0.125 + 1

Combine like terms: -0.125 + 1 = 0.875
1 + -2b + b2 = 0.875

Factor a perfect square on the left side:
(b + -1)(b + -1) = 0.875

Calculate the square root of the right side: 0.935414347

Break this problem into two subproblems by setting 
(b + -1) equal to 0.935414347 and -0.935414347.

Subproblem 1

b + -1 = 0.935414347 Simplifying b + -1 = 0.935414347 Reorder the terms: -1 + b = 0.935414347 Solving -1 + b = 0.935414347 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + b = 0.935414347 + 1 Combine like terms: -1 + 1 = 0 0 + b = 0.935414347 + 1 b = 0.935414347 + 1 Combine like terms: 0.935414347 + 1 = 1.935414347 b = 1.935414347 Simplifying b = 1.935414347

Subproblem 2

b + -1 = -0.935414347 Simplifying b + -1 = -0.935414347 Reorder the terms: -1 + b = -0.935414347 Solving -1 + b = -0.935414347 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + b = -0.935414347 + 1 Combine like terms: -1 + 1 = 0 0 + b = -0.935414347 + 1 b = -0.935414347 + 1 Combine like terms: -0.935414347 + 1 = 0.064585653 b = 0.064585653 Simplifying b = 0.064585653

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.935414347, 0.064585653}

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