Raemillsonand
Raemillsonand
15-10-2016
Mathematics
contestada
2√7 times 3 √21 simply
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Аноним
Аноним
15-10-2016
21=3*7
(2√7)(3√(3*7)=6√(3*7²)=6*7(√3)=42√3
Answer: (2√7)(3√21)=42√3
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