125a⁶b³ · (-0,2a²b⁴)³ = 125a⁶b³ · (-0,008a⁶b¹²) = 125 × (-0,008) × a⁶⁺⁶ × b³⁺¹² = -1a¹²b¹⁵ = -a¹²b¹⁵
Ответ: -a¹²b¹⁵