表达式85: negative "x" equals left parenthesis, 1.7 9 left parenthesis, negative "y" plus 5 , right parenthesis minus 8.9 , right parenthesis squared minus 7 left brace, negative 6.9 9 8 less than or equal to negative "x" less than or equal to negative 6.0 5 5 , right brace−x=1.79−y+5−8.92−7−6.998≤−x≤−6.055
85
表达式86: "x" equals left parenthesis, 1.7 9 left parenthesis, "y" plus 5 , right parenthesis minus 8.9 , right parenthesis squared minus 7 left brace, negative 6.9 9 8 less than or equal to "x" less than or equal to negative 6.0 5 5 , right bracex=1.79y+5−8.92−7−6.998≤x≤−6.055
