Ответ:
45
Объяснение:
(6-3√5)(6+3√5)(3√5 -2√20)·√5=(6²-(3√5)²)(3√5-2√(5·4))·√5=(36-9·5)·√5 ·(3-2√4)·√5=(36-45)·5(3-2·2)=-9·5(3-4)=-45·(-1)=45
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Ответ:
45
Объяснение:
(6-3√5)(6+3√5)(3√5 -2√20)·√5=(6²-(3√5)²)(3√5-2√(5·4))·√5=(36-9·5)·√5 ·(3-2√4)·√5=(36-45)·5(3-2·2)=-9·5(3-4)=-45·(-1)=45