49=-5m^2+42m

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Solution for 49=-5m^2+42m equation:


Simplifying
49 = -5m2 + 42m

Reorder the terms:
49 = 42m + -5m2

Solving
49 = 42m + -5m2

Solving for variable 'm'.

Reorder the terms:
49 + -42m + 5m2 = 42m + -42m + -5m2 + 5m2

Combine like terms: 42m + -42m = 0
49 + -42m + 5m2 = 0 + -5m2 + 5m2
49 + -42m + 5m2 = -5m2 + 5m2

Combine like terms: -5m2 + 5m2 = 0
49 + -42m + 5m2 = 0

Factor a trinomial.
(7 + -5m)(7 + -1m) = 0

Subproblem 1

Set the factor '(7 + -5m)' equal to zero and attempt to solve: Simplifying 7 + -5m = 0 Solving 7 + -5m = 0 Move all terms containing m to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -5m = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -5m = 0 + -7 -5m = 0 + -7 Combine like terms: 0 + -7 = -7 -5m = -7 Divide each side by '-5'. m = 1.4 Simplifying m = 1.4

Subproblem 2

Set the factor '(7 + -1m)' equal to zero and attempt to solve: Simplifying 7 + -1m = 0 Solving 7 + -1m = 0 Move all terms containing m to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1m = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1m = 0 + -7 -1m = 0 + -7 Combine like terms: 0 + -7 = -7 -1m = -7 Divide each side by '-1'. m = 7 Simplifying m = 7

Solution

m = {1.4, 7}

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