Expression 1: "x" squared plus "y" squared less than or equal to 1 left brace, "x" squared plus left parenthesis, "y" minus 1 , right parenthesis squared less than or equal to 1 , right brace left brace, left parenthesis, "x" plus StartFraction, StartRoot, 3 , EndRoot Over 2 , EndFraction , right parenthesis squared plus left parenthesis, "y" minus 1 half , right parenthesis squared greater than or equal to 1 , right bracex2+y2≤1x2+y−12≤1x+322+y−122≥1