SOLUTION: Simplify. 2{{{ sqrt (21) }}} / {{{ sqrt (7) }}}

Algebra ->  Square-cubic-other-roots -> SOLUTION: Simplify. 2{{{ sqrt (21) }}} / {{{ sqrt (7) }}}      Log On


   

Question 308953: Simplify.
2+sqrt+%2821%29+ / +sqrt+%287%29+
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
2{ sqrt (21) } / { sqrt (7) }
2Sqrt (3*7) / sqrt7
2 Sqrt3 * sqrt7 / sqrt7
=2sqrt3