Question

(a+b)(c-d)+(a-b)(c+d)+2 (ac+bd)​

Answer 1

Answer:

(a+b)(2a-3b+c)-(2a-3b)c

a(2a-3b+c) +b(2a-3b+c) -[ 2a(c) - 3b(c)]

2a2 - 3ab+ ac + 2ab - 3b2 +bc - 2ac + 3bc

=2a² -ab -ac+4bc-3b²

Step-by-step explanation:

hope this help you

Answer 2

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

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

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

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

=4ac

Hope it helps........