Question

m ( - 6 m - 4 ) + 9 m (-3 m + 6 )

Answer 1

$m( - 6m - 4) + 9m( - 3m + 6) = - 6 {m}^{2} - 4m - 27 {m}^{2} + 54m = \\ = - 33 {m}^{2} + 50m$

Answer 2

Не знаю. Правильно ли