Question

Pls give correct answer

Answer 1

Answer:

a-(a-b)-b-(b-a)

(a-a-b)-(b- b -a)

-b -b +b -a

-2b + b -a

-b - a

Answer 2

Step-by-step explanation:

1)a-a+b-b-b+a=a-b

2)x square- y square -4x