Question

помогите срочно 5,6​

Answer 1

Ответ:

5)

$(a + 4)(a + 2) - (a + 2) ^{2} = {a}^{2} + 2a + 4a + 8 - (a ^{2} + 4a + 4) = {a}^{2} + 6a + 8 - {a}^{2} - 4a - 4 = 2a - 4 = 2 \times ( - 3) - 4 = - 6 - 4 = - 10$