Question 214915
square root symbol 2 over 7 times square root symbol 7 over 3 
.
{{{sqrt(2/7)*sqrt(7/3)}}}
.
{{{sqrt((2*7)/(7*3))}}}
.
{{{sqrt(2/3)}}}
.
Now, you must "rationalize" the denominator:
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{{{sqrt(2/3)}}} * {{{sqrt(3)/sqrt(3)}}}
.
{{{sqrt(6)/3}}}