8m^2-16m-99=-9

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Solution for 8m^2-16m-99=-9 equation:


Simplifying
8m2 + -16m + -99 = -9

Reorder the terms:
-99 + -16m + 8m2 = -9

Solving
-99 + -16m + 8m2 = -9

Solving for variable 'm'.

Reorder the terms:
-99 + 9 + -16m + 8m2 = -9 + 9

Combine like terms: -99 + 9 = -90
-90 + -16m + 8m2 = -9 + 9

Combine like terms: -9 + 9 = 0
-90 + -16m + 8m2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-45 + -8m + 4m2) = 0

Factor a trinomial.
2((-5 + -2m)(9 + -2m)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-5 + -2m)' equal to zero and attempt to solve: Simplifying -5 + -2m = 0 Solving -5 + -2m = 0 Move all terms containing m to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -2m = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2m = 0 + 5 -2m = 0 + 5 Combine like terms: 0 + 5 = 5 -2m = 5 Divide each side by '-2'. m = -2.5 Simplifying m = -2.5

Subproblem 2

Set the factor '(9 + -2m)' equal to zero and attempt to solve: Simplifying 9 + -2m = 0 Solving 9 + -2m = 0 Move all terms containing m to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -2m = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -2m = 0 + -9 -2m = 0 + -9 Combine like terms: 0 + -9 = -9 -2m = -9 Divide each side by '-2'. m = 4.5 Simplifying m = 4.5

Solution

m = {-2.5, 4.5}

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