First, use this rule for dividing fractions:
#(color(red)(a)/color(blue)(b))/(color(green)(c)/color(purple)(d)) = (color(red)(a) xx color(purple)(d))/(color(blue)(b) xx color(green)(c))#
#(color(red)(a^2)/color(blue)(b^3))/(color(green)(b^5)/color(purple)(a)) = (color(red)(a^2) xx color(purple)(a))/(color(blue)(b^3) xx color(green)(b^5))#
Now, use these two rules of exponents to multiply the terms in the numerator and denominator:
#a = a^color(red)(1)# and #x^color(red)(a) xx x^color(blue)(b) = x^(color(red)(a) + color(blue)(b))#
#(color(red)(a^2) xx color(purple)(a))/(color(blue)(b^3) xx color(green)(b^5)) = (color(red)(a^2) xx color(purple)(a^1))/(color(blue)(b^3) xx color(green)(b^5)) = a^(color(red)(2) + color(purple)(1))/b^(color(blue)(3) + color(green)(5)) = a^3/b^8#
