PrecalculusHardPolar Coordinates and Complex Numbers SharePolar Coordinates and Complex Numbers · Hard problemUse DeMoivre's Theorem to compute (3+i)7(\sqrt3+i)^7(3+i)7; write the answer as a+bia+bia+bi.A−643−65i-64\sqrt3-65i−643−65iB−1283−64i-128\sqrt3-64i−1283−64iC−643−64i-64\sqrt3-64i−643−64iD−643+64i-64\sqrt3+64i−643+64iCheck Show answer Walk through it step by step Practice more like this Review this concept