-5b^2-b-1=0

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Solution for -5b^2-b-1=0 equation:


Simplifying
-5b2 + -1b + -1 = 0

Reorder the terms:
-1 + -1b + -5b2 = 0

Solving
-1 + -1b + -5b2 = 0

Solving for variable 'b'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(1 + b + 5b2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(1 + b + 5b2)' equal to zero and attempt to solve: Simplifying 1 + b + 5b2 = 0 Solving 1 + b + 5b2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.2 + 0.2b + b2 = 0 Move the constant term to the right: Add '-0.2' to each side of the equation. 0.2 + 0.2b + -0.2 + b2 = 0 + -0.2 Reorder the terms: 0.2 + -0.2 + 0.2b + b2 = 0 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + 0.2b + b2 = 0 + -0.2 0.2b + b2 = 0 + -0.2 Combine like terms: 0 + -0.2 = -0.2 0.2b + b2 = -0.2 The b term is b. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.2b + 0.25 + b2 = -0.2 + 0.25 Reorder the terms: 0.25 + 0.2b + b2 = -0.2 + 0.25 Combine like terms: -0.2 + 0.25 = 0.05 0.25 + 0.2b + b2 = 0.05 Factor a perfect square on the left side: (b + 0.5)(b + 0.5) = 0.05 Calculate the square root of the right side: 0.223606798 Break this problem into two subproblems by setting (b + 0.5) equal to 0.223606798 and -0.223606798.

Subproblem 1

b + 0.5 = 0.223606798 Simplifying b + 0.5 = 0.223606798 Reorder the terms: 0.5 + b = 0.223606798 Solving 0.5 + b = 0.223606798 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + b = 0.223606798 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + b = 0.223606798 + -0.5 b = 0.223606798 + -0.5 Combine like terms: 0.223606798 + -0.5 = -0.276393202 b = -0.276393202 Simplifying b = -0.276393202

Subproblem 2

b + 0.5 = -0.223606798 Simplifying b + 0.5 = -0.223606798 Reorder the terms: 0.5 + b = -0.223606798 Solving 0.5 + b = -0.223606798 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + b = -0.223606798 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + b = -0.223606798 + -0.5 b = -0.223606798 + -0.5 Combine like terms: -0.223606798 + -0.5 = -0.723606798 b = -0.723606798 Simplifying b = -0.723606798

Solution

The solution to the problem is based on the solutions from the subproblems. b = {-0.276393202, -0.723606798}

Solution

b = {-0.276393202, -0.723606798}

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