Question

(a+b)(c-d)+(a-b)(c+d)​

Answer 1

Answer:

Namaste mate! Here is your answer.

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

= [ac - ad + bc - bd] + [ac + ad - bc - bd]

= ac - ad + bc - bd + ac + ad - bc - bd

= 2ac - 2bd

= 2 (ac - bd)