wielomian W(x)=xszescian-4x mozna zapisac
a)W(x)=x(x-2)do kwadr
b)W(x)=x(x-2)(x+2)
c)W(x)=xkwad(x-4)
d)W(x)=x(x-4)kwad
zad2 : zbiorem rozwiazan rownania xdo szescianu-2xkwadr-4x+8=0
a){-1;1;2} b){2;-2} c){-2;0;2} d0 nie ma rozwiazania
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zad1
W(x)=x³-4x
W(x)=x(x²-4)
W(x)=x(x-2)(x+2)
odp:B
zad2
x³-2x²-4x+8=0
(x³-2x²)-(4x-8)=0
x²(x-2)-4(x-2)=0
(x-2)(x²-4)=0
(x-2)(x-2)(x+2)=0
x=2;x=2;x=-2
odp:B