What is the square root of 5 times the square root of 3?

1 Answer
smendyka
Mar 25, 2018

What is sqrt(5) xx sqrt(3)?

Use this rule for radicals: sqrt(color(red)(a)) * sqrt(color(blue)(b)) = sqrt(color(red)(a) * color(blue)(b))

Substituting gives:

sqrt(color(red)(5)) * sqrt(color(blue)(3)) => sqrt(color(red)(5) * color(blue)(3)) => sqrt(15) Or, approximately 3.873

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