Question

please give the answers fast​

Answer 1

Answer: HI ARMY HOW ARE U ALL

Answer 2

We know the identity a 2−b 2=(a+b)(a−b)

Using the above identity, the given expression a 2−b 2−a+b can be factorised as follows:

• a 2−b 2−a+b

• =[(a+b)(a−b)]−1(a−b)

• =(a−b)(a+b−1)

• Hence, a 2−b 2−a+b=(a−b)(a+b−1)