Question

3.2. 1) (x - a) (x + y); 3) (t + 8) (b + k); 5)(a + 2) (6-3); 7) (d - 4) (t + 5); S​

Answer 1

(x - a) (x + y)=х^2+ху-ах+ау

(t + 8) (b + k)=tb+tk+8b+8k

(a + 2) (6-3)=6a-3a+12+6=3a+18=3(a+6)

(d - 4) (t + 5)=dt+5d-4t-20