Answer
Complete:
$2K^{+} (aq)+ CO^{3-}_{2} (aq) + Cu^{2+} (aq) + 2 NO_{3}^{−} (aq) → CuCO_{3}(s) + 2 K^{+}(aq) + 2 NO_{3}^{-}(aq) $
Net ionic: $CO^{3-}_{2} (aq) + Cu^{2+} (aq) → CuCO_{3}(s)$
Copper (II) Carbonate is the precipitate
Work Step by Step
Note, it is important to check that there is the same number of each element on either side of the reaction arrow. Also, recall that the net ionic equation only involves the ions that come together to form the solid.