Question 445712
   <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi,
 (9 + 2 sqrt6)(6 - sqrt6)
  54+ 3sqr(6) - 12
SUM of the outside terms {{{-9sqrt(6)}}} and the inside terms {{{12sqrt(6)}}}= {{{3sqrt(6)}}}
          F	First terms
          O	Outside terms
          I	Inside terms
          L	Last terms