3b^2-8b=9-2b

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Solution for 3b^2-8b=9-2b equation:


Simplifying
3b2 + -8b = 9 + -2b

Reorder the terms:
-8b + 3b2 = 9 + -2b

Solving
-8b + 3b2 = 9 + -2b

Solving for variable 'b'.

Reorder the terms:
-9 + -8b + 2b + 3b2 = 9 + -2b + -9 + 2b

Combine like terms: -8b + 2b = -6b
-9 + -6b + 3b2 = 9 + -2b + -9 + 2b

Reorder the terms:
-9 + -6b + 3b2 = 9 + -9 + -2b + 2b

Combine like terms: 9 + -9 = 0
-9 + -6b + 3b2 = 0 + -2b + 2b
-9 + -6b + 3b2 = -2b + 2b

Combine like terms: -2b + 2b = 0
-9 + -6b + 3b2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-3 + -2b + b2) = 0

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

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

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

Solution

b = {-1, 3}

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