Предмет: Алгебра, автор: tea1543

Помогите решить , и объясните пожаулста : 2корень125 + 2корень 20 -2корень80. объясните пожаулста

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Автор ответа: NNNLLL54

$2sqrt{125}+2sqrt{20}-2sqrt{80}=2sqrt{25cdot 5}+2sqrt{4cdot 5}-2sqrt{16cdot 5}=\\=2cdot 5sqrt5+2cdot 2sqrt5-2cdot 4sqrt5=10sqrt5+4sqrt5-8sqrt5=6sqrt5$

Автор ответа: aanbkaya

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английский True/False
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