Question

4. (a - b)2 + (a - b)​

Answer 1

Answer:

We can factorise ( a2−b2 ) but not for (a2+b2) factorization.

But commonly (a2+b2) written as:

(a+b)2−2ab

OR

(a−b)2+2ab

OR

12×[(a+b)2+(a−b)2]

Answer 2

Answer:

2a-2b+a-b=3a-3b

Step-by-step explanation:

multiplying 2 by both terms a and b we get 2a-2b

then adding 2a-2b and a-b

like this 2a+a-2b-b

we get 3a-3b