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Mathematics 21 Online
OpenStudy (anonymous):

Can someone please help me with Square roots?

OpenStudy (anonymous):

Simplify: \[\sqrt{75}\]

OpenStudy (kc_kennylau):

\[\sqrt{75}=\sqrt{25\times3}=\sqrt{5^2\times3}=\fbox{please continue :D}\]

OpenStudy (only4u):

its \[5\sqrt{3}\]

OpenStudy (anonymous):

ok, so how did \[\sqrt{5^{2}\times 3} go \to 5\sqrt{3}\]

OpenStudy (kc_kennylau):

\[\sqrt{5^2\times3}=\sqrt{5^2}\sqrt3=5\sqrt3\]

OpenStudy (kc_kennylau):

By using the rule \(\sqrt{a^2}=a\)

OpenStudy (kc_kennylau):

By the definition of \(\sqrt{}\)

OpenStudy (anonymous):

Ohhhhhhhh!!!!! Ok, I get it now! Thank you so much for explaining this to me, I was completely lost!

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