75=20w-w^2

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Solution for 75=20w-w^2 equation:


Simplifying
75 = 20w + -1w2

Solving
75 = 20w + -1w2

Solving for variable 'w'.

Reorder the terms:
75 + -20w + w2 = 20w + -20w + -1w2 + w2

Combine like terms: 20w + -20w = 0
75 + -20w + w2 = 0 + -1w2 + w2
75 + -20w + w2 = -1w2 + w2

Combine like terms: -1w2 + w2 = 0
75 + -20w + w2 = 0

Factor a trinomial.
(5 + -1w)(15 + -1w) = 0

Subproblem 1

Set the factor '(5 + -1w)' equal to zero and attempt to solve: Simplifying 5 + -1w = 0 Solving 5 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1w = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1w = 0 + -5 -1w = 0 + -5 Combine like terms: 0 + -5 = -5 -1w = -5 Divide each side by '-1'. w = 5 Simplifying w = 5

Subproblem 2

Set the factor '(15 + -1w)' equal to zero and attempt to solve: Simplifying 15 + -1w = 0 Solving 15 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1w = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1w = 0 + -15 -1w = 0 + -15 Combine like terms: 0 + -15 = -15 -1w = -15 Divide each side by '-1'. w = 15 Simplifying w = 15

Solution

w = {5, 15}

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