\(\displaystyle{\left[\begin{array}{ccc} {2}&{1}&{4}\\-{3}&{1}&{5}\\{4}&{0}&{0}\end{array}\right]}\)

\(\displaystyle={2}{\left({0}-{0}\right)}–{1}{\left({0}-{20}\right)}+{4}{\left({0}–{4}\right)}={0}+{20}–{16}={4}\)

D = 4

\(\displaystyle={2}{\left({0}-{0}\right)}–{1}{\left({0}-{20}\right)}+{4}{\left({0}–{4}\right)}={0}+{20}–{16}={4}\)

D = 4