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trapecia [35]
3 years ago
14

Simplify square root. BRAINLIEST! Help asap! (For the 2nd one, i accidentally clicked 9 so just act like there is no yellow)

Mathematics
1 answer:
Kazeer [188]3 years ago
3 0

Answer:

\sqrt{2}\cdot \sqrt{200}=20\\\sqrt{25}+\sqrt{4}=7

Step-by-step explanation:

200=2\times100=2\times10\times10\\200=2\times10^2\\\sqrt{200}=\sqrt{2\times10^2}=\sqrt{2}\times\sqrt{10^2} \\=10\sqrt{2} \\\\\sqrt{2}\cdot \sqrt{200}=(\sqrt{2})\cdot(10\sqrt{2})\\=10\cdot(\sqrt{2}\times\sqrt{2})\\=10\cdot2\\=20

25=5\times5=5^2\\\sqrt{25}=\sqrt{5^2}=5\\4=2\times2=2^2\\\sqrt{4}=\sqrt{2^2}=2\\\sqrt{25}+\sqrt{4}=5+2=7

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