Question 279164
I think your expression is:


{{{sqrt(5) + 1/sqrt(5) - 1}}}


If so, then:


multiply {{{sqrt(5)}}} by {{{sqrt(5)/sqrt(5)}}} to get:


{{{5/sqrt(5) + 1/sqrt(5) - 1}}} which becomes:


{{{6/sqrt(5) - 1}}}


multiply 1 by {{{sqrt(5)/sqrt(5)}}} to get:


{{{6/sqrt(5) - sqrt(5)/sqrt(5)}}} which becomes:


{{{(6 - sqrt(5))/sqrt(5)}}}


multiply this by {{{sqrt(5)/sqrt(5)}}} to get:


{{{(6*sqrt(5) - 5)/5}}}


Verify this is correct by using your calculator to solve the original expression and then using your calculator to solve the final expression.


Both expressions should give you the same answer (they do).