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 + -1b)(2 + -1b) = 0

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

Simplifying
2 + -1b = 0

Solving
2 + -1b = 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 + -1b = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1b = 0 + -2
-1b = 0 + -2

Combine like terms: 0 + -2 = -2
-1b = -2

Divide each side by '-1'.
b = 2

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

Simplifying
2 + -1b = 0

Solving
2 + -1b = 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 + -1b = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1b = 0 + -2
-1b = 0 + -2

Combine like terms: 0 + -2 = -2
-1b = -2

Divide each side by '-1'.
b = 2

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