SOLUTION: How to simplify the below expression? (a-2)"2" -3 (a-3) (a+3)+ 4(2a-1)

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Question 1159640: How to simplify the below expression?
(a-2)"2" -3 (a-3) (a+3)+ 4(2a-1)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How to simplify the below expression?
(a-2)"2" -3 (a-3) (a+3)+ 4(2a-1)
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What does "2" mean?