Odpowiedzi

2009-11-12T16:34:42+01:00
½+2 /(½)²-4=2½ / ¼-4= 2½ / -¾= -3⅓
2009-11-12T16:35:35+01:00
(x+2) / (x²-4) = (x+2)/ [(x+2)(x-2)] = 1/(x-2)

1/ (1/2-2) = 1/(-3/2) = -2/3


Pozdrawiam! :)
2009-11-12T16:39:43+01:00
X+2/x²-4 =1/2+2/(1/2)²-4=2,5/1/4-4=2,5/0,25-4=
=2,5/-3,75=-0,666666666666667