Question

ПОМІЖІТЬ БУДЬ ЛАССКАААААААА!!!!!!!​

Answer 1

Ответ:

А)

${( - \frac{ x}{2y} )}^{2} \times {( - \frac{ 2}{x}) }^{3} = \frac{ {x}^{2} }{ {(2y)}^{2} } \times( - \frac{ {2}^{3} }{ {x}^{3} } ) = \\ \frac{ {x}^{2} }{4 {y}^{2} } \times ( - \frac{8}{ {x}^{3} }) = - \frac{2}{x {y}^{2} }$

Б)

${ (\frac{3a}{2b} )}^{3} \div {( - \frac{a}{3b} )}^{2} = \frac{ {(3a)}^{3} }{( {2b)}^{3} } \div \frac{ {a}^{2} }{ {(3b)}^{2} } = \\ \frac{27 {a}^{3} }{8 {b}^{3} } \div \frac{ {a}^{2} }{9 {b}^{2} } = \frac{27 {a}^{3} }{8 {b}^{3} } \times \frac{ 9 {b}^{2} }{ {a}^{2} } = \frac{243a}{8b}$