m^2=-40m-400

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Solution for m^2=-40m-400 equation:


Simplifying
m2 = -40m + -400

Reorder the terms:
m2 = -400 + -40m

Solving
m2 = -400 + -40m

Solving for variable 'm'.

Reorder the terms:
400 + 40m + m2 = -400 + -40m + 400 + 40m

Reorder the terms:
400 + 40m + m2 = -400 + 400 + -40m + 40m

Combine like terms: -400 + 400 = 0
400 + 40m + m2 = 0 + -40m + 40m
400 + 40m + m2 = -40m + 40m

Combine like terms: -40m + 40m = 0
400 + 40m + m2 = 0

Factor a trinomial.
(20 + m)(20 + m) = 0

Subproblem 1

Set the factor '(20 + m)' equal to zero and attempt to solve: Simplifying 20 + m = 0 Solving 20 + m = 0 Move all terms containing m to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + m = 0 + -20 Combine like terms: 20 + -20 = 0 0 + m = 0 + -20 m = 0 + -20 Combine like terms: 0 + -20 = -20 m = -20 Simplifying m = -20

Subproblem 2

Set the factor '(20 + m)' equal to zero and attempt to solve: Simplifying 20 + m = 0 Solving 20 + m = 0 Move all terms containing m to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + m = 0 + -20 Combine like terms: 20 + -20 = 0 0 + m = 0 + -20 m = 0 + -20 Combine like terms: 0 + -20 = -20 m = -20 Simplifying m = -20

Solution

m = {-20, -20}

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