Автор - ILOVEYOU99

помогите пожалуйста
(2m-3n)^3 =

Ответ

Автор - nurlanalisanov
(2m-3n)^3=(2m)^3-3×(2m)^2×3n+3×2m×(3n) ^2-(3n)^3=8m^3-36m^2n+54mn^2-27m^2

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