Use part b to write the complete factorization.

\(\displaystyle{f{{\left({x}\right)}}}={2}{x}^{{3}}-{x}^{{2}}-{10}{x}+{5}\)

\(\displaystyle={\left({2}{x}-{1}\right)}{\left({x}+\sqrt{{5}}\right)}{\left({x}-\sqrt{-}{5}\right)}\)

\(\displaystyle{f{{\left({x}\right)}}}={2}{x}^{{3}}-{x}^{{2}}-{10}{x}+{5}\)

\(\displaystyle={\left({2}{x}-{1}\right)}{\left({x}+\sqrt{{5}}\right)}{\left({x}-\sqrt{-}{5}\right)}\)