Question

add: a2 + ba - bc + c2 + 2cb-5ca + b2 + ac - 2ab​

Answer 1

Answer:

a2 + ba - bc + c2 + 2cb - 5ca + b2 + ac - 2ab

= a2 + b2 + c2 - 2ab + ba + 2cb - bc - 5ca + ac

= a2 + b2 + c2 - ab + bc - 4ac

Hope this answer will help you