Question

simply combing of like term. a-(b-a)-b-(b-a)​

Answer 1

Answer:

3a-3b

Step-by-step explanation:

a-b+a-b-b+a

a+a+a-b-b-b

2a+a-2b-b

3a-3b

Answer 2

Answer:

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

= a (-b+a) -b (-b+a)

= (a-b) (-b+a)

= (a-b)(a-b)

$= (a - b) {}^{2}$