Expression 14: "P" Subscript, 1 , Baseline equals StartFraction, 5 times "D" Subscript, 1 , Baseline Over StartRoot, left parenthesis, "D" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesis squared plus "A" squared , EndRoot plus 5 , EndFractionP1=5·D1D1−A12+A22+5