Question

Выполните действия a) (8x/a)^2*(ab/4x)^3 b)(9y/c^2)^2*(c/3y)^3 c)(2x^2/3y)^2: (4x^3/3y^2)^2

Answer 1

А)
$(\frac{8x}{a})^2*( \frac{ab}{4x})^3= \frac{64a^3b^3x^2}{64a^2x^3}= \frac{ab^3}{x}$
B)
$(\frac{9y}{c^2})^2*( \frac{c}{3y})^3= \frac{81y^2c^3}{81c^4y^3}= \frac{1}{cy}$
C) 
$(\frac{2x^2}{3y})^2:( \frac{4x^3}{3y^2})^2= \frac{4x^4*9y^4} {9y^2*16x^6}= \frac{y^2}{4x^2}=( \frac{y}{2x})^2$