SOLUTION: Factor completely: ac+cd-ab-bd

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Question 275859: Factor completely:
ac+cd-ab-bd
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
c(a+d)-b(a+d)
(c-b)*(a+d)
or rearrange
ac-ab+cd-bd
a(c-b)+d*(c-b)
(a+d)*(c-b)