Ответ:
[tex]\displaystyle \frac{1}{2+\sqrt{3} }+\frac{1}{2-\sqrt{3}} =4[/tex]
Объяснение:
[tex]\displaystyle \frac{1}{2+\sqrt{3} }+\frac{1}{2-\sqrt{3}} =\frac{2-\sqrt{3}+2+\sqrt{3} }{(2+\sqrt{3})(2-\sqrt{3})} =\frac{4}{2^2-(\sqrt{3} )^2} =\frac{4}{4-3} =\frac{4}{1}=4[/tex]
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Ответ:
[tex]\displaystyle \frac{1}{2+\sqrt{3} }+\frac{1}{2-\sqrt{3}} =4[/tex]
Объяснение:
[tex]\displaystyle \frac{1}{2+\sqrt{3} }+\frac{1}{2-\sqrt{3}} =\frac{2-\sqrt{3}+2+\sqrt{3} }{(2+\sqrt{3})(2-\sqrt{3})} =\frac{4}{2^2-(\sqrt{3} )^2} =\frac{4}{4-3} =\frac{4}{1}=4[/tex]