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Given the function `P(x) = 2x^3 +x^2 + 2x +1`

List all the potential rational zeros of `P(x)` separated by commas.

 
List the real zeros of `P(x)` as ordered pairs `(x,y)` separated by commas.

 

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   x  x    n  |   | (   ) π DNE
   x    (   ) π DNE
( ) ( ] [ ) [ ] —∞ DNE
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