Inleiding veeltermen

\((\frac{-8}{16}-p)(\frac{-2}{18}-q)\)

\(\begin{align}(\frac{-8}{16}-p)(\frac{-2}{18}-q)& =(\color{red}{-p}+\color{orange}{\frac{-1}{2}}).(\color{green}{-q}+\color{blue}{\frac{-1}{9}})& \text{Vereenvoud4g (verplicht!) en herschik (niet verplicht)} \\& = \color{red}{(-p)} . \color{green}{(-q)} + \color{red}{(-p)} . \color{blue}{(\frac{-1}{9})} + \color{orange}{(\frac{-1}{2})} . \color{green}{(-q)} + \color{orange}{(\frac{-1}{2})} . \color{blue}{(\frac{-1}{9})}& \text{Boogjes en uitschrijven} \\ & = pq+\frac{1}{9}p+\frac{1}{2}q+\frac{1}{2}.\frac{1}{9}& \text{Uitwerken } \\ & =pq+\frac{1}{9}p+\frac{1}{2}q+\frac{1}{18} & \text{Uitrekenen (Geen Smoothie!)} \\\end{align}\)