m^2+8m=20

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


Simplifying
m2 + 8m = 20

Reorder the terms:
8m + m2 = 20

Solving
8m + m2 = 20

Solving for variable 'm'.

Reorder the terms:
-20 + 8m + m2 = 20 + -20

Combine like terms: 20 + -20 = 0
-20 + 8m + m2 = 0

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

Subproblem 1

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

Subproblem 2

Set the factor '(2 + -1m)' equal to zero and attempt to solve: Simplifying 2 + -1m = 0 Solving 2 + -1m = 0 Move all terms containing m to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1m = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1m = 0 + -2 -1m = 0 + -2 Combine like terms: 0 + -2 = -2 -1m = -2 Divide each side by '-1'. m = 2 Simplifying m = 2

Solution

m = {-10, 2}

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