Выражения: (2m²+3n)(4m⁴-6m²n+9n²)-28n⁶ (5с-2p²)(25с²+10cp²+4p⁴)-126c³ - вопрос №181481723469285225104126 от DevilWoods 11.02.2022 12:59

Question

Алгебра: Выражения: (2m²+3n)(4m⁴-6m²n+9n²)-28n⁶ (5с-2p²)(25с²+10cp²+4p⁴)-126c³

DevilWoods · Answer

1) (2m²+3n)(4m⁴-6m²n+9n²)-28n⁶ = 8m^6 -12m^4n + 18m^2n^2 + 12m^4n - - 18m^2n^2 + 27n^3 - 28n^6 = 8m^6 + 27n^3 - 28n^6 = 8m^6 + n^3(27 - 28n^3)
2) (5с-2p²)(25с²+10cp²+4p⁴)-126c³ = 125c^3 + 50c^2p^2 + 20cp^4 - 50c^2p^2 - 20cp^4 - 8p^6 - 126c^3 = -c^3 - 8p^6 = - (c^3 + 8p^6)