Question

A.
4. (a - b)2 + (a - b)​

Answer 1

Answer:

a

$a { {?}^{2} + bz}^{2} - 2ab$

Step-by-step explanation:

follow

Answer 2

Answer:

3(a-b)

Step-by-step explanation:

2a-2b+a-b

2a+a-2b-b

3a-3b

3(a-b)