Question

(2m-3n)3 Ayuda Porfavor

Answer 1

$(2m-3n) ^{3} = (2m) ^{3} -3(2m) ^{2}(3n)+3(2m)(3n)^{2} +(3n)^{3}$

$8m^{3} - 36m^{2} n +54mn^{2} -27 n^{3}$

Answer 2

Aplicas :
Productos Notables.
(a - b)³ = a³ - 3a²b + 3ab² - b³

(2m - 3n)³ =
(2m)³ - 3(2m)²(3n) + 3(2m)(3n)² - (3n)³ =
2³m³ - 3(2²m²)(3n) + 6m(3²n²) - 3³n³ =
8m³ - 9n(4m²) + 6m(9n²) - 27n³ =
8m³ - 36m²n + 54mn²  - 27n³

Respuesta.
8m³ - 36m²n + 54mn² - 27n³