Question

(a4)5 * (a3)3

(y2)4 * y/y6

Answer 1

(а^4)^5 * (а^3)^3 =а^20 * а^9 = а^29
(у^2)^4 * у/у^6= у^8 * у/у^6 =у^9/у^6=у^3