Ответ:
а) (y⁷)³ : (y⁴)⁴ = y²¹ : y¹⁶ = y⁵.
б) (x³/y)⁵ : (x²/y³)³ = (x¹⁵/y⁵) : (x⁶/y⁹) = x⁹y⁴.
в) (4¹⁶ · 4²⁶)/(4³)¹³ = 4⁴²/4³⁹ = 4³.
г) ((−3)⁹ · (−3)¹⁶)/3²¹ = (−3)²⁵/3²¹ = −3⁴.
а) (y⁷)³ : (y⁴)⁴ = y²¹ : y¹⁶ = y⁵.
б) (x³/y)⁵ : (x²/y³)³ = (x¹⁵/y⁵) : (x⁶/y⁹) = x⁹y⁴.
в) (4¹⁶ · 4²⁶)/(4³)¹³ = 4⁴²/4³⁹ = 4³.
г) ((−3)⁹ · (−3)¹⁶)/3²¹ = (−3)²⁵/3²¹ = −3⁴.