(9-w)(4w+2)=0

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Solution for (9-w)(4w+2)=0 equation:


Simplifying
(9 + -1w)(4w + 2) = 0

Reorder the terms:
(9 + -1w)(2 + 4w) = 0

Multiply (9 + -1w) * (2 + 4w)
(9(2 + 4w) + -1w * (2 + 4w)) = 0
((2 * 9 + 4w * 9) + -1w * (2 + 4w)) = 0
((18 + 36w) + -1w * (2 + 4w)) = 0
(18 + 36w + (2 * -1w + 4w * -1w)) = 0
(18 + 36w + (-2w + -4w2)) = 0

Combine like terms: 36w + -2w = 34w
(18 + 34w + -4w2) = 0

Solving
18 + 34w + -4w2 = 0

Solving for variable 'w'.

Factor out the Greatest Common Factor (GCF), '2'.
2(9 + 17w + -2w2) = 0

Factor a trinomial.
2((9 + -1w)(1 + 2w)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(9 + -1w)' equal to zero and attempt to solve: Simplifying 9 + -1w = 0 Solving 9 + -1w = 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 + -1w = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1w = 0 + -9 -1w = 0 + -9 Combine like terms: 0 + -9 = -9 -1w = -9 Divide each side by '-1'. w = 9 Simplifying w = 9

Subproblem 2

Set the factor '(1 + 2w)' equal to zero and attempt to solve: Simplifying 1 + 2w = 0 Solving 1 + 2w = 0 Move all terms containing w to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2w = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2w = 0 + -1 2w = 0 + -1 Combine like terms: 0 + -1 = -1 2w = -1 Divide each side by '2'. w = -0.5 Simplifying w = -0.5

Solution

w = {9, -0.5}

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