Wie rechne ich teilweise Wurzeln?
Beispiel: Wurzel aus 75...
Oder: (wurzel aus 45 plus wurzel aus 125) mal wurzel aus 5
$${\sqrt{{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{3}}}} = {\mathtt{5}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{3}}}}$$
$${\sqrt{{\mathtt{45}}}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{125}}}} = {\mathtt{3}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{5}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{5}}}}$$ = $${\mathtt{8}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{5}}}}$$
$${\sqrt{{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{3}}}} = {\mathtt{5}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{3}}}}$$
$${\sqrt{{\mathtt{45}}}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{125}}}} = {\mathtt{3}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{5}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{5}}}}$$ = $${\mathtt{8}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{5}}}}$$