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How do you multiply $sqrt8*sqrt4$ ?

1 Answer

Jun 4, 2015

In general $sqrt(a)*sqrt(b) = sqrt(a*b)$

$sqrt(8)*sqrt(4)$
$color(white)("XXXX")$ $=sqrt(8*4)$

$color(white)("XXXX")$ $= sqrt(4*2*4)$

$color(white)("XXXX")$ $=4sqrt(2)$

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