Expression 10: "x" equals 10 pi "y" squaredx=10πy2
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Expression 11: left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" , right parenthesis Superscript, 2 , Baseline equals 1x2+y2=1
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Expression 12: left parenthesis, "x" minus 200 , right parenthesis squared plus left parenthesis, "y" , right parenthesis Superscript, 2 , Baseline equals 159x−2002+y2=159
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Expression 13: left parenthesis, "x" plus 200 , right parenthesis squared plus left parenthesis, "y" , right parenthesis Superscript, 2 , Baseline equals 159x+2002+y2=159
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Expression 14: left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" plus 200 , right parenthesis Superscript, 2 , Baseline equals 159x2+y+2002=159
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Expression 15: left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" minus 200 , right parenthesis Superscript, 2 , Baseline equals 159x2+y−2002=159
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Expression 16: left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" minus 999999 , right parenthesis Superscript, 2 , Baseline equals 1000000000000x2+y−9999992=1000000000000
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Expression 17: "x" equals left brace, "x" less than 10 , right bracex=x<10
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Expression 18: left parenthesis, "x" minus 2 , right parenthesis squared plus left parenthesis, "y" plus 2 , right parenthesis Superscript, 2 , Baseline equals 0.0 0 0 2x−22+y+22=0.0002
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Expression 19: left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" , right parenthesis Superscript, 2 , Baseline equals 1000000000000x2+y2=1000000000000
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Expression 20: left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" , right parenthesis Superscript, 2 , Baseline equals 90000000000000000000000x2+y2=90000000000000000000000