Question

даю 10 баллов,решите срочно!)​

Answer 1

Ответ:

4m * (3+5m) - 10M *(6 +2m) = 12m +20m^2 - 60m - 20 m^2= 48 m

2a * (3a -5) - (a - 3)(a-7) = 6a^2 - 10a - (a^2-7a-3a+21) = 6a^2 - 10a -a^2 +10a-21 = 5a^2 -21