b^2=-4-4b

Solution for b^2=-4-4b equation:

Simplifying
b2 = -4 + -4b

Solving
b2 = -4 + -4b

Solving for variable 'b'.

Reorder the terms:
4 + 4b + b2 = -4 + -4b + 4 + 4b

Reorder the terms:
4 + 4b + b2 = -4 + 4 + -4b + 4b

Combine like terms: -4 + 4 = 0
4 + 4b + b2 = 0 + -4b + 4b
4 + 4b + b2 = -4b + 4b

Combine like terms: -4b + 4b = 0
4 + 4b + b2 = 0

Factor a trinomial.
(2 + b)(2 + b) = 0

Subproblem 1
Set the factor '(2 + b)' equal to zero and attempt to solve:

Simplifying
2 + b = 0

Solving
2 + b = 0

Move all terms containing b to the left, all other terms to the right.

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

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

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

Simplifying
b = -2
Subproblem 2
Set the factor '(2 + b)' equal to zero and attempt to solve:

Simplifying
2 + b = 0

Solving
2 + b = 0

Move all terms containing b to the left, all other terms to the right.

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

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

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

Simplifying
b = -2
Solution
b = {-2, -2}