Question

sqrt 3 times sqrt 21

Answer 1

just multiply them together.........

Answer 2

You can rewrite the expression this way:
\[\sqrt{3}\sqrt{21}=\sqrt{3}\sqrt{3}\sqrt{7}\]
Then, because the square root of 3 times itself is 3, you get this:
\[\sqrt{3}\sqrt{3}\sqrt{7}=3\sqrt{7}\]

Answer 3

but u knw u will have 2 sqrt 3's..........coz of sqrt 7 * 3 = 21....so u will have one 3 outside as well

Answer 4

oh. well. thats confusing aha but i think i get it ... thank you! @jabberwock @driftracer305

Answer 5

yea....jabberwock is right........

Answer 6

No worries :)