Expression 21: "y" equals "m" Subscript, 1 , Baseline left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesisy=m1x−C1
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Expression 22: "y" equals negative StartRoot, "R" squared minus "x" squared , EndRooty=−R2−x2
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Expression 23: "m" Subscript, 1 , Baseline left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesis equals negative StartRoot, "R" squared minus "x" squared , EndRootm1x−C1=−R2−x2
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Expression 24: "a" "x" squared plus "b" "x" plus "c" equals 0ax2+bx+c=0
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Expression 25: "D" Subscript, 1 , Baseline equals StartFraction, negative "b" minus StartRoot, "b" squared minus 4 "a" "c" , EndRoot Over 2 "a" , EndFraction equals negative 4.3 9 3 7 6 2 5 1 1 5 9D1=−b−b2−4ac2a
