Odpowiedzi

2010-04-11T16:24:23+02:00
X2(x-7)-4(x-7)=(x2-4)(x-7)
2010-04-11T16:26:50+02:00
W(x) = x³ – 7x² – 4x + 28
x²(x-7) -4(x-7)
(x-7)(x²-4)
(x-7) (x+2)(x-2)