Odpowiedzi

2010-02-21T19:48:13+01:00
(2x-3)²+(x+1)(x-1)=4x²-12x+9+x²-1=5x²-12x+8
2010-02-21T19:50:35+01:00
(2x-3)2 + (x+1)(x-1) = 4x - 6 + x +1 *x-1 = 5x - 6
2010-02-21T19:58:39+01:00
(2x-3)2 +(x+1)(x-1)=
4x²+9+x²-x+x-1=(-x+x--skraca się)
5x²+8