Question 73475
Side 1: {{{ 4 }}}  
Side 2: {{{sqrt(5) + sqrt(3)}}}
Side 3: {{{sqrt(5) - sqrt(3)}}}
To find the perimiter, we add the sides
{{{ 4 +  sqrt(5) + sqrt(3) + sqrt(5) - sqrt(3) }}}
When we combine the like terms the sqrt3 cancels since one is + and one is -
{{{ 4 +  sqrt(5) + sqrt(5) }}}
And the sqrt5 adds to one another
{{{ 4 + 2sqrt(5) }}}