Doprowadź wynik do prostszej postaci:

Odpowiedź:
1/(√7-√6)= (√7+√6)/[(√7-√6)(√7+√6)]= (√7+√6)/(7-6)=√7+√6
3/(√6-√3)= 3*(√6+√3)/[(√6-√3)(√6+√3)]= ( 3√6+3√3)= (6-3)=
√6+√3
4/(√7+√3)=4*(√7-√3)/[(√7+√3)(√7-√3)]=4*(√7-√3)/4=
√7-√3
całosc = √7+√6-√6-√3-√7+√3=0
Szczegółowe wyjaśnienie:
[tex]\frac{1}{\sqrt{7}-\sqrt{6}}-\frac{3}{\sqrt{6}-\sqrt{3}}-\frac{4}{\sqrt{7}+\sqrt{3}}=\frac{1(\sqrt{7}+\sqrt{6})}{(\sqrt{7}-\sqrt{6})(\sqrt{7}+\sqrt{6})}-\frac{3(\sqrt{6}+\sqrt{3})}{(\sqrt{6}-\sqrt{3})(\sqrt{6}+\sqrt{3})}-\frac{4(\sqrt{7}-\sqrt{3})}{(\sqrt{7+\sqrt{3})(\sqrt{7}-\sqrt{3})}}=[/tex]
[tex]=\frac{\sqrt{7}+\sqrt{6}}{7-6}-\frac{3(\sqrt{6}+\sqrt{3})}{6-3} -\frac{4(\sqrt{7}-\sqrt{3})}{7-3} = \frac{\sqrt{7}-\sqrt{6}}{1}-\frac{3(\sqrt{6}+\sqrt{3})}{3} -\frac{4(\sqrt{7}-\sqrt{3})}{4}=\\\\\\=\sqrt{7}+\sqrt{6} -(\sqrt{6}+\sqrt{3})-(\sqrt{7}-\sqrt{3})=\sqrt{7}+\sqrt{6} - \sqrt{6}-\sqrt{3}-\sqrt{7}+\sqrt{3}=0[/tex]