Question 1050249
Use the rule:
{{{ a^b * c^b = ( a*c )^b }}}
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{{{ sqrt( 84/14 )*sqrt( 68/56 ) }}}
{{{ sqrt( 6 )*sqrt( 17/14 ) 
{{{ sqrt( 6*( 17/14 ) ) }}}
{{{ sqrt( 51/7 ) }}}
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check answer:
{{{ sqrt( 84/14 )*sqrt( 68/56 ) }}}
{{{ sqrt( 6 ) * sqrt( 1.21429 ) }}}
{{{ 2.44949 * 1.10195 = 2.69922 }}}
and
{{{ sqrt( 51/7 ) = sqrt( 7.28571 ) }}}
{{{ sqrt( 51/7 ) = 2.69921 }}}
Looks close enough