Question

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

Answer 1

this is the step by step solution

Answer 2

Answer:

4ac

Step-by-step explanation:

[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-ad+bc-bd+ac+ad-bc-bd+2ac+2bd

=2ac-2bd+2ac+2bd

=4ac