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Simplifying 7y(9y + 4) = 0 Reorder the terms: 7y(4 + 9y) = 0 (4 * 7y + 9y * 7y) = 0 (28y + 63y2) = 0 Solving 28y + 63y2 = 0 Solving for variable 'y'. Factor out the Greatest Common Factor (GCF), '7y'. 7y(4 + 9y) = 0 Ignore the factor 7.Subproblem 1
Set the factor 'y' equal to zero and attempt to solve: Simplifying y = 0 Solving y = 0 Move all terms containing y to the left, all other terms to the right. Simplifying y = 0Subproblem 2
Set the factor '(4 + 9y)' equal to zero and attempt to solve: Simplifying 4 + 9y = 0 Solving 4 + 9y = 0 Move all terms containing y to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 9y = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 9y = 0 + -4 9y = 0 + -4 Combine like terms: 0 + -4 = -4 9y = -4 Divide each side by '9'. y = -0.4444444444 Simplifying y = -0.4444444444Solution
y = {0, -0.4444444444}
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