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sweet [91]
3 years ago
15

Simplify 3.3√40-4.3√320-3√5​

Mathematics
1 answer:
vodka [1.7K]3 years ago
4 0

 

\displaystyle\\~~~~3.3\sqrt{40}-4.3\sqrt{320}-3\sqrt{5}=\\\\=3.3\sqrt{4\times10}-4.3\sqrt{64\times5}-3\sqrt{5}=\\\\=3.3\times2\sqrt{10}-4.3\times8\sqrt{5}-3\sqrt{5}=\\\\=6.6\sqrt{10}-34.4\sqrt{5}-3\sqrt{5}=\\\\=\boxed{\bf6.6\sqrt{10}-37.4\sqrt{5}}

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