Question 194521
( 4sqrt3 -1)^2
(4sqrt3 -1)  (4sqrt3 -1)
distribute  using  FIOL
16 *3  -8 sqrt3 +1
49 -8sqrt3,,,,,,,,,,ANSWER

check
original  =  35.143  (  using  calc)
answer  =  35.143,,,,,,,,,,,,,,,,,,,,,,,,,,ok