Упростите: 1)2ab-3ba+5a-a2)xy-y+y-yx

Question

Упростите:

1)2ab-3ba+5a-a
2)xy-y+y-yx

Answer 1

1) a(2b-3b+5-2)=a(3-b)

2) y(x-1+1-x)=0

Answer 2

1)-ba +4a=a(3-b).

2)0.