Expression 1: left parenthesis, left parenthesis, "x" plus "y" "i" , right parenthesis to the 4th power times negative "i" , right parenthesis .real less than 0 left brace, max left parenthesis, StartAbsoluteValue, "x" , EndAbsoluteValue , StartAbsoluteValue, "y" , EndAbsoluteValue , right parenthesis less than 20 , right bracex+yi4·−i.real<0maxx,y<20