How do you multiply $sqrt21* sqrt3$ ?

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Answer 1 · 2015-07-07T05:21:01

$= sqrt63 or color(green)(3sqrt7$

$sqrtcolor(green)(21) . sqrt3$

$= sqrt(color(green)(21).3)$

$= sqrt(color(green)(3.7).3)$

$= sqrt63 or color(green)(3sqrt7$

How do you multiply sqrt21* sqrt3sqrt21* sqrt3?