Предмет: Алгебра, автор: topolafaiss

(3\sqrt{5} - 2) * (3\sqrt{5} + 2)

Ответы

Автор ответа: himikomat
0

Ответ:

(3 \sqrt{5} - 2) \times (3 \sqrt{5} + 2) = {(3 \sqrt{5}) }^{2} - {2}^{2} = {3}^{2} {( \sqrt{5}) }^{2} - {2}^{2} = 9 {( \sqrt{5} )}^{2} - {2}^{2} = 9 \times 5 - {2}^{2} = 45 - 4 = 41 \\

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