Practice problem
Evaluate for some complex number z=a+biz=a+biz=a+bi: z‾2\overline{z}^2z2
a2+b2+2abia^2+b^2+2abia2+b2+2abi
a2+b2−2abia^2+b^2-2abia2+b2−2abi
a2−b2+2abia^2-b^2+2abia2−b2+2abi
a2−b2−2abia^2-b^2-2abia2−b2−2abi
Type a concept, like “slope” or “photosynthesis”.
