Question

Умножить
(в+2) (8-а)
(3a-2b) (2a-3b)

Answer 1

$(b + 2)(8 - a) = 8b - ab + 2 \times 8 - 2a = 8b - ab + 16 - 2a \\ \\ (3a - 2b)(2a - 3b) = 6 {a}^{2} - 9ab - 4ab + 6 {b}^{2} = 6 {a}^{2} - 13ab + 6 {b}^{2}$