Question 79083
{{{21+(sqrt(63)/3)}}} and this equals

{{{21+(sqrt(7*9)/3)}}} which equals

{{{21+(3sqrt(7)/3)}}} and this reduces to:


{{{21+sqrt(7)}}}------------------------------------ans

CK
Using a calculator

{{{21+(sqrt(63)/3)=23.6457}}}

{{{21+sqrt(7)=23.6457}}}


Hope this helps-------ptaylor