Question

Solve each of the following equations.
(b) 9y(1 - y) = 2​

Answer 1

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$9y(1 - y) = 2$

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$9y(1 - y) = 2 \\ 9y - y {}^{2} = 2 \\ y(9 - y) = 2 \\ 9 - y = \frac{2}{y} \\ 9 = \frac{2}{y} - y \\ 9 = \frac{2 - 2y}{y} \\ 9y = 2 - 2y \\ 9y + 2y = 2 \\ 11y = 2 \\ x = \frac{2}{11}$

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