Odpowiedzi

2009-12-02T16:02:33+01:00
A²-4ab+4b²+4b²-12b²+9b²-(3a-b)(9a²-b²)+16ab-14b²=
=a²-9b²+12ab-26a³+3ab+9a²b-b³=
=(-26a³)-b³+9a²b+3ab²+a²-9b²+12ab
Najlepsza Odpowiedź!
2009-12-02T16:03:58+01:00
(a-2b)² +(2b-3b)²-(3a-b)(3a-b)(3a+b)-(8a-7b)(-2b) =
=a²-4ab+4b²+(4b²-12b+6b²)-(9a²+b²)(3a+b)-(-16ab+21b²)=
=a²-4ab+4b²+4b²-12b+6b²-27a³-b³+16ab-21b²=
=a²+12ab-7b²-12b-27a³-b³