Determine the interpolation polynomial $p_n\in \Pi_n$

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Determine to $n=0, \ldots , 6$ the interpolation polynomial $p_n\in \Pi_n$ of order $n$ with the property $$p_n(k)=1+k+k^2, \ \ k=0, \ldots , n$$

So do we have to find the general formula of the polynonmial with the above property?