Question

Решить 1 и 4 пример пожалуйста))

Answer 1

$\displaystyle\bf\\1)\\\\\frac{3^{2}\cdot 81 }{3^{4} } =\frac{3^{2} \cdot3^{4} }{3^{4} } =3^{2} =9\\\\\\4)\\\\\Big(\frac{14}{15} \Big)^{3}\cdot\Big(\frac{3}{7} \Big)^{3}\cdot\frac{5}{8} =\Big(\frac{14}{15} \cdot\frac{3}{7} \Big)^{3} \cdot\frac{5}{8}=\Big(\frac{2}{5}\Big)^{3}\cdot\frac{5}{8} =\frac{8}{125} \cdot\frac{5}{8} =\\\\\\=\frac{1}{25}=0,04$