please show formulas

\begin{tabular}{l} ABC Tech Valuation Estimate \\ Step 1: Calculate FCF \\ Step 2: Calculate Terminal Value \\ Step 3: Calculate PV of FCF and T \\ Step 1 \\ Net Income (After Tax) \\ Add back D\&A \\ Substract NWC \\ Substract CapEx \\ \hline FCF \\ \hline \end{tabular} \begin{tabular}{l} Step 2 \\ \hline Assumed growth rate \\ Use "build-up" rate as WACC \\ \hline Terminal value =====> \\ \hline \end{tabular} Step 3 PV of FCF Total PV of FCF