Expression 4: "x" equals negative StartFraction, "b" Over 2 , EndFractionx=−b2
equals=
negative 1.8 5−1.85
4
Hidden Label: left parenthesis, negative StartFraction, "b" Over 2 , EndFraction , left parenthesis, negative StartFraction, "b" Over 2 , EndFraction , right parenthesis squared plus "b" left parenthesis, negative StartFraction, "b" Over 2 , EndFraction , right parenthesis plus "c" , right parenthesis−b2,−b22+b−b2+c