Bestimme in Q [ 11 ] {\displaystyle {}\mathbb {Q} [{\sqrt {11}}]} das Inverse von 3 + 5 11 {\displaystyle {}3+5{\sqrt {11}}} .
![{\displaystyle {}\mathbb {Q} [{\sqrt {11}}]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/710315491dcb6fb4bbb5c2f8c6589943be8e7fc6)
das Inverse von 
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