How do you simplify $sqrt(7/9)*sqrt(4/7)$ ?

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Answer 1 · 2017-04-08T08:59:25

$= pm 2/3$

$sqrt(7/9)*sqrt(4/7)$

$= sqrt(cancel7/9 cdot 4/cancel7)$

$= pm 2/3$

NB : These are the square roots. The principal (or positive) square root is $2/3$ .

How do you simplify sqrt(7/9)*sqrt(4/7)sqrt(7/9)*sqrt(4/7)?