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Simplifying -2w(w + -9) = 40 Reorder the terms: -2w(-9 + w) = 40 (-9 * -2w + w * -2w) = 40 (18w + -2w2) = 40 Solving 18w + -2w2 = 40 Solving for variable 'w'. Reorder the terms: -40 + 18w + -2w2 = 40 + -40 Combine like terms: 40 + -40 = 0 -40 + 18w + -2w2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-20 + 9w + -1w2) = 0 Factor a trinomial. 2((-5 + w)(4 + -1w)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-5 + w)' equal to zero and attempt to solve: Simplifying -5 + w = 0 Solving -5 + w = 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 + w = 0 + 5 Combine like terms: -5 + 5 = 0 0 + w = 0 + 5 w = 0 + 5 Combine like terms: 0 + 5 = 5 w = 5 Simplifying w = 5Subproblem 2
Set the factor '(4 + -1w)' equal to zero and attempt to solve: Simplifying 4 + -1w = 0 Solving 4 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1w = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1w = 0 + -4 -1w = 0 + -4 Combine like terms: 0 + -4 = -4 -1w = -4 Divide each side by '-1'. w = 4 Simplifying w = 4Solution
w = {5, 4}
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