Question

Помогите $( frac{5x ^{2} }{4y ^{3} } ) ^{2} : frac{25 x^{6} }{16 y^{5} }$

Answer 1

$( frac{5x^2}{4y^3})^2: frac{25x^6}{16y^5}= frac{5^2x^4}{4^2y^6}cdot frac{4^2y^5}{5^2x^6}= frac{1}{x^2y}$