(11-42-√2)*(11+42-√2)=121+462-11√2-462-1764+42√2-11√2-42√2+2=121-11√2-1764-11√2+2=-1643+(-11-11)√2=-1643-22√2
(11-42-√2)*(11+42-√2)=121+462-11√2-462-1764+42√2-11√2-42√2+2=121-11√2-1764-11√2+2=-1643+(-11-11)√2=-1643-22√2