Expression 10: "u" equals StartFraction, "y" Subscript, 2 , Baseline minus "g" plus StartNestedFraction, "f" squared minus "x" squared NestedOver "y" Subscript, 1 , Baseline minus "g" , EndNestedFraction minus StartNestedFraction, "x" squared minus "x" squared NestedOver "y" Subscript, 1 , Baseline minus "y" Subscript, 2 , Baseline , EndNestedFraction Over 2 StartNestedFraction, "f" minus "x" Subscript, 1 , Baseline NestedOver "y" Subscript, 1 , Baseline minus "g" , EndNestedFraction minus 2 StartNestedFraction, "x" Subscript, 2 , Baseline minus "x" Subscript, 1 , Baseline NestedOver "y" Subscript, 1 , Baseline minus "y" Subscript, 2 , Baseline , EndNestedFraction , EndFractionu=y2−g+f2−x21y1−g−x22−x21y1−y22f−x1y1−g−2x2−x1y1−y2