\(\delta_{\text{obs}}=\ \delta_{u}+\delta_{b}\frac{\left(K_{D}+\left[L\right]_{T}+[{P]}_{T}\right)-\ \sqrt{{(K_{D}+\left[L\right]_{T}+[{P]}_{T})}^{2}-(4*\left[L\right]_{T}[{P]}_{T})\ }}{2*[{P]}_{T}}\) (2)