Merkwaardige producten (MP)

Bereken de volgende merkwaardige producten

\((-8b^4-5)(8b^4-5)\)

\((\color{red}{-8b^4}\color{blue}{-5})(\color{red}{8b^4}\color{blue}{-5})=\color{blue}{(-5)}^2-\color{red}{(8b^4)}^2=25-64b^{8}\)