How do you simplify $sqrt(14) times sqrt(21)$ ?

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Answer 1 · 2016-07-02T21:38:36

$7sqrt6$

Break each number down into its prime factors first,
Then combine the two roots into one and see where we go from there....

$sqrt( 2 xx7) xx sqrt( 3 xx7) = sqrt(2xx3xx7xx7)$

= $sqrt(6 xx 7^2) = 7sqrt6$

How do you simplify sqrt(14) times sqrt(21)sqrt(14) times sqrt(21)?