Răspuns :
12/(√6-√2)=12(√6+√2)/(√6-√2)(√6+√2)=12(√6+√2)/(6-2)=12(√6+√2)/4=3(√6+√2)
[tex] \frac{12}{ \sqrt{6}- \sqrt{2} } = \frac{12( \sqrt{6}+ \sqrt{2}) }{(\sqrt{6}- \sqrt{2})(\sqrt{6}+ \sqrt{2})}= \frac{12 \sqrt{6}+12 \sqrt{2} }{6-2}= 3\sqrt{6}+ 3\sqrt{2} [/tex]
(ultima fractie se simplifica cu 4)
(ultima fractie se simplifica cu 4)