Question 194520
(2sqrt5-5sqrt6)(3sqrt5+1sqrt6)
distribute  using  FOIL
6*5 +2 sqrt(5*6) -15sqrt(5*6) -5*6
30  -13 sqrt(30) -30
 - 13 sqrt (30 ),,,,,,,ANSWER
check
original = -71.2
answer  = -71.2,,,,,,,ok