Expression 12: left parenthesis, "x" plus 0 , right parenthesis squared plus left parenthesis, "y" plus 6 , right parenthesis squared equals .5x+02+y+62=.5
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Expression 13: left parenthesis, "x" plus 3 , right parenthesis squared plus left parenthesis, "y" plus 1.7 , right parenthesis squared equals .0 2x+32+y+1.72=.02
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Expression 14: left parenthesis, "x" plus 3.4 , right parenthesis squared plus left parenthesis, "y" plus 2.1 , right parenthesis squared equals .0 5x+3.42+y+2.12=.05
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Expression 15: left parenthesis, "x" plus 2.7 , right parenthesis squared plus left parenthesis, "y" plus 2.2 , right parenthesis squared equals .0 3x+2.72+y+2.22=.03
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Expression 16: left parenthesis, "x" minus 2.7 , right parenthesis squared plus left parenthesis, "y" plus 1.8 , right parenthesis squared equals .0 2x−2.72+y+1.82=.02
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Expression 17: left parenthesis, "x" minus 3.3 , right parenthesis squared plus left parenthesis, "y" plus 1.9 , right parenthesis squared equals .0 4x−3.32+y+1.92=.04
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Expression 18: left parenthesis, "x" minus 3.1 , right parenthesis squared plus left parenthesis, "y" plus 2.3 , right parenthesis squared equals .0 1x−3.12+y+2.32=.01
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Expression 19: left parenthesis, "x" plus .3 , right parenthesis squared plus left parenthesis, "y" plus 6 , right parenthesis squared equals .0 4x+.32+y+62=.04
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Expression 20: left parenthesis, "x" minus .2 , right parenthesis squared plus left parenthesis, "y" plus 5.7 , right parenthesis squared equals .0 2x−.22+y+5.72=.02
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Expression 21: left parenthesis, "x" minus .2 , right parenthesis squared plus left parenthesis, "y" plus 6.3 , right parenthesis squared equals .0 3x−.22+y+6.32=.03
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Expression 22: hyperbolic cosine left parenthesis, "x" , right parenthesis left brace, negative 2.5 7 less than or equal to "x" less than or equal to 2.5 7 , right bracecoshx−2.57≤x≤2.57