SOLUTION: can you help me here in this question: 3√7 √21 in words it is 3 sqrt7 over 21

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Question 1029630: can you help me here in this question: 3√7
√21
in words it is 3 sqrt7 over 21
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
looks like the problem is
:
(3 * square root(7)) / square root(21)
:
multiply the denominator and numerator by the square root(21)
:
(3 * square root(147)) / 21
:
square root(147) / 7
:
square root(3 * 7^2) / 7
:
(7 * square root(3)) / 7
:
****************
square root(3)
****************
: