Question

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

Answer 1

Answer:

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

now we multiply each other,

     =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

i hope this answer helps you :D

Answer 2

Step-by-step explanation:

(ac + bc - as -bd) +(ac + 0ad - bc - bd ) + 2 (ac+ ba)

4ac