(b-8)(b+3)=0

Solution for (b-8)(b+3)=0 equation:

Simplifying
(b + -8)(b + 3) = 0

Reorder the terms:
(-8 + b)(b + 3) = 0

Reorder the terms:
(-8 + b)(3 + b) = 0

Multiply (-8 + b) * (3 + b)
(-8(3 + b) + b(3 + b)) = 0
((3 * -8 + b * -8) + b(3 + b)) = 0
((-24 + -8b) + b(3 + b)) = 0
(-24 + -8b + (3 * b + b * b)) = 0
(-24 + -8b + (3b + b2)) = 0

Combine like terms: -8b + 3b = -5b
(-24 + -5b + b2) = 0

Solving
-24 + -5b + b2 = 0

Solving for variable 'b'.

Factor a trinomial.
(-3 + -1b)(8 + -1b) = 0

Subproblem 1
Set the factor '(-3 + -1b)' equal to zero and attempt to solve:

Simplifying
-3 + -1b = 0

Solving
-3 + -1b = 0

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

Add '3' to each side of the equation.
-3 + 3 + -1b = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1b = 0 + 3
-1b = 0 + 3

Combine like terms: 0 + 3 = 3
-1b = 3

Divide each side by '-1'.
b = -3

Simplifying
b = -3
Subproblem 2
Set the factor '(8 + -1b)' equal to zero and attempt to solve:

Simplifying
8 + -1b = 0

Solving
8 + -1b = 0

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

Add '-8' to each side of the equation.
8 + -8 + -1b = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -1b = 0 + -8
-1b = 0 + -8

Combine like terms: 0 + -8 = -8
-1b = -8

Divide each side by '-1'.
b = 8

Simplifying
b = 8
Solution
b = {-3, 8}