1) (x+2) (x+2)=
2) (m-1) (m-1)=
3) (3-a) (3-a)=
4) (7+p) (7+p)=
2. p.s - /2 квадрат
1) (m+n)/2=
3) (1-m)/2=
4) (2+n)/2=
5) (2m+n)/2=
6) (m-2n)/2=