a) (3x²)³⋅2x = 3³⋅(x²)³⋅2x = 27x⁶⋅2x = 54x⁷
б) (-y⁸)³⋅4y² = (-1)³⋅(y⁸)³⋅4y² = -1⋅y²⁴⋅4y² = -4y²⁶
в) (-a⁴)⁴⋅15a¹² = (-1)⁴⋅(a⁴)⁴⋅15a¹² = 1⋅a¹⁶⋅15a¹² = 15a²⁸
г) (⅔n³)³⋅(-6n²)² = (⅔)³⋅(n³)³⋅(-6)²⋅(n²)² = 8/27⋅n⁹⋅36⋅n⁴ = (8⋅36)/27⋅n¹³ = (8⋅4)/3⋅n¹³ = 32/3⋅n¹³
Ответ: