-4b ⋅ 3b² = -12b³
-4b ⋅ 2b = -8b²
-4b ⋅ (-5) = 20b
-12b³ - 8b² + 20b
Ответ: -12b³ - 8b² + 20b
5y ⋅ y⁴ = 5y⁵
5y ⋅ (-3y²) = -15y³
5y ⋅ y = 5y²
5y⁵ - 15y³ + 5y²
Ответ: 5y⁵ - 15y³ + 5y²
0,2m ⋅ 5m³ = 1m⁴ = m⁴
0,2m ⋅ (-10m) = -2m²
0,2m ⋅ 1 = 0,2m
m⁴ - 2m² + 0,2m
Ответ: m⁴ - 2m² + 0,2m