Question

284. 1)(c-4) (d-3) помогите пж​

Answer 1

1) (c-4)(d-3)=cd-4d-3c+12

2) (a-10)(-a-2)=-a^2+10a-2a+20=-a^2+8a+20

3) (x+y)(x+1)=x^2+xy+x+y

4) (-p+q)(-1-q)=p-q+pq-q^2