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kotegsom [21]
3 years ago
12

What is the following product 3 sqrt 2(5 sqrt 6-7 sqrt 3)

Mathematics
2 answers:
Licemer1 [7]3 years ago
8 0
3\sqrt2\cdot(5\sqrt6-7\sqrt3)=3\cdot5\cdot\sqrt{2\cdot6}-3\cdot7\cdot\sqrt{2\cdot3}\\\\=15\sqrt{12}-21\sqrt6=15\sqrt{4\cdot3}-21\sqrt6=15\cdot\sqrt4\cdot\sqrt3-21\sqrt6\\\\=15\cdot2\cdot\sqrt3-21\sqrt6=\boxed{30\sqrt3-21\sqrt6}
Used:\\\sqrt{a}\cdot\sqrt{b}=\sqrt{a\cdot b}

liraira [26]3 years ago
8 0

The answer is C. !!!!

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