Задача 65384 ...
Условие
математика
162
Решение
★
[m](1 \frac{9}{16})a^6b^{-9}*((1 \frac{1}{4})ab^{-3})^{-3} = \frac{25}{16}\frac{a^6}{b^9}*(\frac{5}{4}\frac{a}{b^3})^{-3} = \frac{25}{16}\frac{a^6}{b^9}*(\frac{4b^3}{5a})^3 = \frac{25}{16}\frac{a^6}{b^9}*\frac{64b^9}{125a^3}=[/m]
[m]=\frac{25*64}{16*125}*\frac{a^6b^9}{b^9a^3}=\frac{4}{5}*a^3 = 0,8a^3[/m]