1)ab-ax
2.x^2+xy
3.-2b+2a
4.40+4a
5.yx-y^2-zy
6.-5a+5m-5n
1 =ab-ax
2 =x^2=xy
3 =-2b+2a
4 =40-4a
5 =yx-y^2-yz
6 =-5a+5m-5n
1)ab-ax
2.x^2+xy
3.-2b+2a
4.40+4a
5.yx-y^2-zy
6.-5a+5m-5n
1 =ab-ax
2 =x^2=xy
3 =-2b+2a
4 =40-4a
5 =yx-y^2-yz
6 =-5a+5m-5n