Упрости выражения \dfrac{10y^5}{9a} : \dfrac{5y^3}{3b} \cdot \dfrac{3a^2}{by} = . \dfrac{64a^2 - b^2}{10a^2} \cdot \dfrac{a}{16a - 2b} = . \dfrac{3a + 9b}{a - 2b} \cdot \dfrac{6b

Задание

Упрости выражения

\(\dfrac{10y^5}{9a} : \dfrac{5y^3}{3b} \cdot \dfrac{3a^2}{by} = \) [ \(2ay\) | \(\frac{10y}{b}\) | \(\frac{3ba}{y}\) | \(5ya\) ].
\(\dfrac{64a^2 - b^2}{10a^2} \cdot \dfrac{a}{16a - 2b} = \) [ \(-\frac{8a-b}{20a}\) | \(\frac{8a+b}{20a}\) | \(\frac{8a-b}{20a}\) | \(\frac{8a-b}{10a}\) ].
\(\dfrac{3a + 9b}{a - 2b} \cdot \dfrac{6b - 3a}{9b^2 + 6ab + a^2} = \) [ \(-\frac{3b+a}{9}\) | \(\frac{9}{3b+a}\) | \(-\frac{9}{3b+a}\) | \(\frac{3b+a}{9}\) ].