Groups and FieldsMediumField Extensions ShareField Extensions · Medium problemIn R[x]/(x2+1)≅C\mathbb R[x]/(x^2+1)\cong\mathbb CR[x]/(x2+1)≅C, compute (1+2i)(3−i)(1+2i)(3-i)(1+2i)(3−i). What is the real part?Check Show answer Walk through it step by step Practice more like this Review this concept