\[ 16y(2 - y) = 32y - 16y^2 \]
\[ (4y - 5)^2 = (4y)^2 - 2 \cdot 4y \cdot 5 + 5^2 = 16y^2 - 40y + 25 \]
\[ 32y - 16y^2 + 16y^2 - 40y + 25 = 0 \]
\[ (32y - 40y) + (-16y^2 + 16y^2) + 25 = 0 \]
\[ -8y + 25 = 0 \]
\[ -8y = -25 \]
\[ y = \frac{-25}{-8} = \frac{25}{8} = 3,125 \]
Ответ: y = 3,125