b^2+13b+3=-3

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Solution for b^2+13b+3=-3 equation:


Simplifying
b2 + 13b + 3 = -3

Reorder the terms:
3 + 13b + b2 = -3

Solving
3 + 13b + b2 = -3

Solving for variable 'b'.

Reorder the terms:
3 + 3 + 13b + b2 = -3 + 3

Combine like terms: 3 + 3 = 6
6 + 13b + b2 = -3 + 3

Combine like terms: -3 + 3 = 0
6 + 13b + b2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + 13b + -6 + b2 = 0 + -6

Reorder the terms:
6 + -6 + 13b + b2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 13b + b2 = 0 + -6
13b + b2 = 0 + -6

Combine like terms: 0 + -6 = -6
13b + b2 = -6

The b term is 13b.  Take half its coefficient (6.5).
Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.
13b + 42.25 + b2 = -6 + 42.25

Reorder the terms:
42.25 + 13b + b2 = -6 + 42.25

Combine like terms: -6 + 42.25 = 36.25
42.25 + 13b + b2 = 36.25

Factor a perfect square on the left side:
(b + 6.5)(b + 6.5) = 36.25

Calculate the square root of the right side: 6.020797289

Break this problem into two subproblems by setting 
(b + 6.5) equal to 6.020797289 and -6.020797289.

Subproblem 1

b + 6.5 = 6.020797289 Simplifying b + 6.5 = 6.020797289 Reorder the terms: 6.5 + b = 6.020797289 Solving 6.5 + b = 6.020797289 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-6.5' to each side of the equation. 6.5 + -6.5 + b = 6.020797289 + -6.5 Combine like terms: 6.5 + -6.5 = 0.0 0.0 + b = 6.020797289 + -6.5 b = 6.020797289 + -6.5 Combine like terms: 6.020797289 + -6.5 = -0.479202711 b = -0.479202711 Simplifying b = -0.479202711

Subproblem 2

b + 6.5 = -6.020797289 Simplifying b + 6.5 = -6.020797289 Reorder the terms: 6.5 + b = -6.020797289 Solving 6.5 + b = -6.020797289 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-6.5' to each side of the equation. 6.5 + -6.5 + b = -6.020797289 + -6.5 Combine like terms: 6.5 + -6.5 = 0.0 0.0 + b = -6.020797289 + -6.5 b = -6.020797289 + -6.5 Combine like terms: -6.020797289 + -6.5 = -12.520797289 b = -12.520797289 Simplifying b = -12.520797289

Solution

The solution to the problem is based on the solutions from the subproblems. b = {-0.479202711, -12.520797289}

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