400=2w*(50-2w)

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Solution for 400=2w*(50-2w) equation:


Simplifying
400 = 2w(50 + -2w)
400 = (50 * 2w + -2w * 2w)
400 = (100w + -4w2)

Solving
400 = 100w + -4w2

Solving for variable 'w'.

Reorder the terms:
400 + -100w + 4w2 = 100w + -100w + -4w2 + 4w2

Combine like terms: 100w + -100w = 0
400 + -100w + 4w2 = 0 + -4w2 + 4w2
400 + -100w + 4w2 = -4w2 + 4w2

Combine like terms: -4w2 + 4w2 = 0
400 + -100w + 4w2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(100 + -25w + w2) = 0

Factor a trinomial.
4((5 + -1w)(20 + -1w)) = 0

Ignore the factor 4.

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 '(20 + -1w)' equal to zero and attempt to solve: Simplifying 20 + -1w = 0 Solving 20 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1w = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1w = 0 + -20 -1w = 0 + -20 Combine like terms: 0 + -20 = -20 -1w = -20 Divide each side by '-1'. w = 20 Simplifying w = 20

Solution

w = {5, 20}

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