Question 719742
Try to fill in what is missing in (x+____)(x+____).  You see the constant term is 5, so you want something a and b so that ab=5.  You also see a {{{sqrt(5)}}} in the x term.  You might be looking for irrational numbers.


5*1?  {{{1*5}}}?  {{{sqrt(5)*1}}}?  {{{sqrt(5)*sqrt(5)}}}?

Also, in the FOIL method of multiplying, you want to sum of the O and I terms to be {{{2x*sqrt(5)}}}.


Try {{{(x+sqrt(5))(x+sqrt(5))}}}.