(b+21)(b-24)=0

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Solution for (b+21)(b-24)=0 equation:


Simplifying
(b + 21)(b + -24) = 0

Reorder the terms:
(21 + b)(b + -24) = 0

Reorder the terms:
(21 + b)(-24 + b) = 0

Multiply (21 + b) * (-24 + b)
(21(-24 + b) + b(-24 + b)) = 0
((-24 * 21 + b * 21) + b(-24 + b)) = 0
((-504 + 21b) + b(-24 + b)) = 0
(-504 + 21b + (-24 * b + b * b)) = 0
(-504 + 21b + (-24b + b2)) = 0

Combine like terms: 21b + -24b = -3b
(-504 + -3b + b2) = 0

Solving
-504 + -3b + b2 = 0

Solving for variable 'b'.

Factor a trinomial.
(-21 + -1b)(24 + -1b) = 0

Subproblem 1

Set the factor '(-21 + -1b)' equal to zero and attempt to solve: Simplifying -21 + -1b = 0 Solving -21 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + -1b = 0 + 21 Combine like terms: -21 + 21 = 0 0 + -1b = 0 + 21 -1b = 0 + 21 Combine like terms: 0 + 21 = 21 -1b = 21 Divide each side by '-1'. b = -21 Simplifying b = -21

Subproblem 2

Set the factor '(24 + -1b)' equal to zero and attempt to solve: Simplifying 24 + -1b = 0 Solving 24 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-24' to each side of the equation. 24 + -24 + -1b = 0 + -24 Combine like terms: 24 + -24 = 0 0 + -1b = 0 + -24 -1b = 0 + -24 Combine like terms: 0 + -24 = -24 -1b = -24 Divide each side by '-1'. b = 24 Simplifying b = 24

Solution

b = {-21, 24}

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