Question

The question is: (a-b)²-(b-c)²​

Answer 1

Answer:

( a-b+b-c )( a-b-b+c )

= (a-c)(a-2b+c)

Answer 2

Answer:

(a-b)^2-(b-c)^2

{(a-b)+(b-c)}{(a-b)-(b-c)}

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

=(a-c)(a-2b+c)