3b^2+8b=-4

Solution for 3b^2+8b=-4 equation:

Simplifying
3b2 + 8b = -4

Reorder the terms:
8b + 3b2 = -4

Solving
8b + 3b2 = -4

Solving for variable 'b'.

Reorder the terms:
4 + 8b + 3b2 = -4 + 4

Combine like terms: -4 + 4 = 0
4 + 8b + 3b2 = 0

Factor a trinomial.
(2 + b)(2 + 3b) = 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 + 3b)' equal to zero and attempt to solve:

Simplifying
2 + 3b = 0

Solving
2 + 3b = 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 + 3b = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 3b = 0 + -2
3b = 0 + -2

Combine like terms: 0 + -2 = -2
3b = -2

Divide each side by '3'.
b = -0.6666666667

Simplifying
b = -0.6666666667
Solution
b = {-2, -0.6666666667}