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If f (x)=4x -x ^(2), then f (a+1) -f (a-...

If `f (x)=4x -x ^(2),` then `f (a+1) -f (a-1) =`

A

`4 (2-a)`

B

`2(4-a)`

C

`4(2+a)`

D

`2(4+a)`

Text Solution

Verified by Experts

The correct Answer is:
A
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