Question

(a+b)(c-d)+(a-b)(c+d)+2 (ac+bd)
solve this equation ​

Answer 1

Answer:

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

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

=4ac+4bd