0y=22? 0=1+i-1-i, size of Cmplx? (1--1)^2+(i--i)^2 => 4+4i^2==22 => i^2=18/4 => -4.5+i^2 => size cmplx 11.25 => back: 11.25 * (4+4i^2)=22 => 0y>0 => 11.25^2>22; proved; and [...] Read more