Question

(a+b)×(c-d)+(a-b)×(c+d)+2(ac+bd)
please give me answer step by
step ​

Answer 1

Answer:

4ac

Step-by-step explanation:

(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

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