Question

Помогите пожалуста номер 144(2,3,4)

Answer 1

$2) ( \frac{ x^{-3}*y^{4} }{9})^{-2} * ( \frac{3}{x^{-2}*y^{3}})^{-3} = \\ \\ = \frac{x^{6}*y^{-8}}{3^{-4}} * \frac{3^{-3}}{x^{6}*y^{-9}} = 3y \\ \\ \\ 3) ( \frac{m^{-4}}{10*n^{5}*k^{2}})^{-2} / (5*m^{2}*n^{3}*k)^{3} = \\ \\ = \frac{m^{8}}{2^{-2}*5^{-2}*n^{-10}*k^{-4}} * \frac{1}{5^{3}*m^{6}*n^{9}*k^{3}} = \frac{4mnk}{5}$
$\\ 4) ( \frac{9c^{5}}{a^{3}b^{-2}} )^{-2} / ( \frac{a^{2}b^{-3}}{6c^{4}})^{3} = \\ \\ = \frac{3^{-4}c^{-10}}{a^{-6}b^{4}} * \frac{2^{3}3^{3}c^{12}}{a^{6}b^{-9}} = \frac{8c^{2}b^{5}}{3}$