Expression 1: 0 less than or equal to "x" less than or equal to 2 left brace, 0 less than or equal to "y" less than or equal to 2 , right brace0≤x≤20≤y≤2
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Expression 2: "x" "y" less than or equal to 2 left brace, 0 less than or equal to "x" less than or equal to 2 , right brace left brace, 0 less than or equal to "y" less than or equal to 2 , right bracexy≤20≤x≤20≤y≤2