Ответ:а) (a⁵)²·a⁵ = a¹⁰·a⁵ = a¹⁵.б) (c²·c)³ = (c³)³ = c⁹.в) y¹²:(y³)² = y¹²:y⁶ = y⁶.г) (y·y²)³:(y²·y)² = (y³)³:(y³)² = y⁹:y⁶ = y³.