Expression 2: left parenthesis, "x" minus "y" , right parenthesis squared greater than or equal to 1 minus "z" squared left brace, 0 less than or equal to "x" less than or equal to 1 , right brace left brace, 0 less than or equal to "y" less than or equal to 1 , right bracex−y2≥1−z20≤x≤10≤y≤1