SOLUTION:

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Question 89265:
Answer by malakumar_kos@yahoo.com(315) About Me  (Show Source):
You can put this solution on YOUR website!

Write in simplest form. 9-b^2/b^2-b-6
(3)^2-(b)^2/(b-3).(b+2)
= (3-b).(3+b)/(b-3).(b+2)
= -1(b-3).(b+3)/(b-3).(b+2)
= -1(b+3)/(b+2)