How do you multiply $5 sqrt5 * 3 sqrt3$ ?

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Answer 1 · 2015-09-21T05:44:06

$15sqrt15$

You are allowed to multiply the radical numbers since they have the same index.
$5sqrt5*3sqrt3$
$=(5*3)sqrt(5*3)$
$=15sqrt15$

How do you multiply 5 sqrt5 * 3 sqrt35 sqrt5 * 3 sqrt3?