b^2-12b=2b-45

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Solution for b^2-12b=2b-45 equation:


Simplifying
b2 + -12b = 2b + -45

Reorder the terms:
-12b + b2 = 2b + -45

Reorder the terms:
-12b + b2 = -45 + 2b

Solving
-12b + b2 = -45 + 2b

Solving for variable 'b'.

Reorder the terms:
45 + -12b + -2b + b2 = -45 + 2b + 45 + -2b

Combine like terms: -12b + -2b = -14b
45 + -14b + b2 = -45 + 2b + 45 + -2b

Reorder the terms:
45 + -14b + b2 = -45 + 45 + 2b + -2b

Combine like terms: -45 + 45 = 0
45 + -14b + b2 = 0 + 2b + -2b
45 + -14b + b2 = 2b + -2b

Combine like terms: 2b + -2b = 0
45 + -14b + b2 = 0

Factor a trinomial.
(5 + -1b)(9 + -1b) = 0

Subproblem 1

Set the factor '(5 + -1b)' equal to zero and attempt to solve: Simplifying 5 + -1b = 0 Solving 5 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1b = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1b = 0 + -5 -1b = 0 + -5 Combine like terms: 0 + -5 = -5 -1b = -5 Divide each side by '-1'. b = 5 Simplifying b = 5

Subproblem 2

Set the factor '(9 + -1b)' equal to zero and attempt to solve: Simplifying 9 + -1b = 0 Solving 9 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1b = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1b = 0 + -9 -1b = 0 + -9 Combine like terms: 0 + -9 = -9 -1b = -9 Divide each side by '-1'. b = 9 Simplifying b = 9

Solution

b = {5, 9}

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