Answer:

hi baby now solve your sum

Step-by-step explanation:

Solution

(a+b)(c-d)+(a-b)(c+d)+2(ac+bd)

=a(c-d)+b(c-d)+a(c+d)-b(c+d)+2ac+2bd

=ac-ad+bc-bd+ac+ad-bc-bd+2ac+2bd

=ac+ac-ad+ad+bc-bc-bd-bd+2ac+2bd

=4ac

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Answer:

4 ac

Step-by-step explanation:

= ac - ad + bc - bd + ac + ad - bc - bd + 2ac + 2 bd

= 2ac + 2ac - ad + ad + bc - bc - 2bd + 2bd

= 4ac