Question

4 5 и 6,даю 30 баллов

Answer 1

Ответ:

Объяснение:

$4) -\frac{a^{2} }{12b} /\frac{ab}{36} = -\frac{a^{2} }{12b} *\frac{36}{ab}= -\frac{a}{b} *\frac{3}{b} =-\frac{3a}{b^{2} } \\5) -\frac{9y^{2} }{20x^{3} } / \frac{y^{5} }{16x}= -\frac{9y^{2} }{20x^{3} } * \frac{16x}{y^{5} }=-\frac{9}{5x^{2} } *\frac{4}{y^{3} } =-\frac{36}{5x^{2} y^{3} } \\6) \frac{18ax^{2} b^{2} }{5cd} / (-\frac{9ab^{3} }{5c^{2} d^{4} } ) = -\frac{18ax^{2} b^{2} }{5cd} * \frac{ 5c^{2} d^{4}}{9ab^{3} }= -2a*\frac{cd^{3} }{b}=-\frac{2acd^{3} }{b}$