Question 379013
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Hi,
rationalizing
{{{1/(2 + sqrt(11)  )}}}  Multiplying numerator & denominator by {{{(2 - sqrt(11))}}}
{{{(2 - sqrt(11))}}} / {{{(2 + sqrt(11))*(2 - sqrt(11))}}}
{{{(2 - sqrt(11))}}} / (4 - 11)
{{{-1*(2 - sqrt(11))}}} /7
{{{sqrt(11)-2)}}} /7