Let A={-2,\ -1,\ 0,\ 1,\ 2}a n d\ f: A->...

Let `A={-2,\ -1,\ 0,\ 1,\ 2}a n d\ f: A->ZZ` be given y `f(x)=x^2-2x-3.` Find: i. the range of `f` ii. pre images of 6,-3 and 5.

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