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Simplifying (7 + w)(4w + 9) = 0 Reorder the terms: (7 + w)(9 + 4w) = 0 Multiply (7 + w) * (9 + 4w) (7(9 + 4w) + w(9 + 4w)) = 0 ((9 * 7 + 4w * 7) + w(9 + 4w)) = 0 ((63 + 28w) + w(9 + 4w)) = 0 (63 + 28w + (9 * w + 4w * w)) = 0 (63 + 28w + (9w + 4w2)) = 0 Combine like terms: 28w + 9w = 37w (63 + 37w + 4w2) = 0 Solving 63 + 37w + 4w2 = 0 Solving for variable 'w'. Factor a trinomial. (7 + w)(9 + 4w) = 0Subproblem 1
Set the factor '(7 + w)' equal to zero and attempt to solve: Simplifying 7 + w = 0 Solving 7 + w = 0 Move all terms containing w to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + w = 0 + -7 Combine like terms: 7 + -7 = 0 0 + w = 0 + -7 w = 0 + -7 Combine like terms: 0 + -7 = -7 w = -7 Simplifying w = -7Subproblem 2
Set the factor '(9 + 4w)' equal to zero and attempt to solve: Simplifying 9 + 4w = 0 Solving 9 + 4w = 0 Move all terms containing w to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 4w = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 4w = 0 + -9 4w = 0 + -9 Combine like terms: 0 + -9 = -9 4w = -9 Divide each side by '4'. w = -2.25 Simplifying w = -2.25Solution
w = {-7, -2.25}
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