Odpowiedzi

2009-12-20T15:55:15+01:00
(x+1)(x+2)(x+3) =
=(x +1)( x^2 + 5x + 6)=
= x^3 + 5x^2 +6x + 2x^2 +5x + 6 =
= x^3 + 7x^2 + 11x + 6
2009-12-20T15:59:10+01:00
(x+1)(x+2)(x+3) = (x²+2x+x+3)(x+3) = x³+2x²+x²+3x+3x²+6x+3x+6 = x³+6x²+11x + 6