Odpowiedzi

2009-12-14T20:21:19+01:00
(x+1)³-(2x-3)²-(x+3)²+2(x-2)(x+2)=
x³+1+4x-9-x²+9+(2x-4)(x+2)=
x³+1+3x²+2x²+4x-4x-8=
x³-7+5x²
2009-12-14T20:23:53+01:00
X³+3x²+3x+1-4x²+12x-9-x²-6x-9+2x²-8=x³+9x-25