Ответ:
(7√7-11√3)(11√3+7√7)=(7√7-11√3)(7√7+11√3)=
=49•7-121•3=343-363= -20
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Ответ:
(7√7-11√3)(11√3+7√7)=(7√7-11√3)(7√7+11√3)=
=49•7-121•3=343-363= -20