1650 . .. :


.
,
.
,
?

" ", "" " ". .
18.03.2013

LiveJournal Vkontakte Facebook Twitter

(x2 - )2.

____________________________________

:

(x2 - )2 = (x2)2 - 2x2 + ()2 = x4 - 2x2 + 5.

: x4 - 2x2 + 5.


2009-2012 . " - !" - , . .
Rambler's Top100