b^2+8b=20

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Solution for b^2+8b=20 equation:


Simplifying
b2 + 8b = 20

Reorder the terms:
8b + b2 = 20

Solving
8b + b2 = 20

Solving for variable 'b'.

Reorder the terms:
-20 + 8b + b2 = 20 + -20

Combine like terms: 20 + -20 = 0
-20 + 8b + b2 = 0

Factor a trinomial.
(-10 + -1b)(2 + -1b) = 0

Subproblem 1

Set the factor '(-10 + -1b)' equal to zero and attempt to solve: Simplifying -10 + -1b = 0 Solving -10 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1b = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1b = 0 + 10 -1b = 0 + 10 Combine like terms: 0 + 10 = 10 -1b = 10 Divide each side by '-1'. b = -10 Simplifying b = -10

Subproblem 2

Set the factor '(2 + -1b)' equal to zero and attempt to solve: Simplifying 2 + -1b = 0 Solving 2 + -1b = 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 + -1b = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1b = 0 + -2 -1b = 0 + -2 Combine like terms: 0 + -2 = -2 -1b = -2 Divide each side by '-1'. b = 2 Simplifying b = 2

Solution

b = {-10, 2}

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