Автор - Nigaraaaaa

Решите пожааалуйста первый пример с дробями

Ответ

Автор - solving05

Ответ:

Объяснение:

frac{sqrt{5}-sqrt{3}}{sqrt{5}+sqrt{3}}+frac{sqrt{5}+sqrt{3}}{sqrt{5}-sqrt{3}}-frac{sqrt{5}+1}{sqrt{5}-1}=frac{(sqrt{5}-sqrt{3})^2+(sqrt{5}+sqrt{3})^2}{(sqrt{5}+sqrt{3})(sqrt{5}-sqrt{3})}-frac{sqrt{5}+1}{sqrt{5}-1}=\=frac{(5-2sqrt{5}*sqrt{3}+3)+(5+2sqrt{5}*sqrt{3}+3)}{5-3}-frac{sqrt{5}+1}{sqrt{5}-1}=frac{16}{2}-frac{sqrt{5}+1}{sqrt{5}-1}=8-frac{sqrt{5}+1}{sqrt{5}-1}=\=frac{8sqrt{5}-8-sqrt{5}-1}{sqrt{5}-1}=frac{7sqrt{5}-9}{sqrt{5}-1}

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