i did the following:
(1-2sqrt3) (1-2sqrt3)
1times 1=1
1 times -2sqrt2 = -2sqrt 3
-2sqrt3 times 1 = -2sqrt3
-2sqrt3 time - 2sqrt3 = 4sqrt 3 <<< Incorrect
-2 sqrt3 time - 2 sqrt3= (-2)(-2) (?3)(?3) = (4) (3) = 12
so I have
1 - 2sqrt3 - 2sqrt3 + 4 sqrt 3
which leaves me with 1
which is very wrong
help?