Question

Помогите срочно............ ​

Answer 1

Ответ:

$- 7 {m}^{2} n + 9m {n}^{2} + m {n}^{2} + 4 {m}^{2} - 2 {m}^{2} n \\ - 9 {m}^{2} n + 10m {n}^{2} + 4 {m}^{2} = m( - 9mn + 10 {n}^{2} + 4m) = m(m( - 9n + 4) + 10 {n}^{2} ))$