1. Rozłóż wielomian na czynniki W(x) = x⁴ +4x³ - 13x² - 4x +12
W(1)= 1+4-13-4+12=17-17=0
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W(-1)= -1+5+8-12= 13-13=0
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delta=16- 4*(-12)= 16+48=64
odp. -6,2, 1,-1
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W(1)= 1+4-13-4+12=17-17=0
______________________________
________________
=
____________________
=
_____________________
=
________________
= =
W(-1)= -1+5+8-12= 13-13=0
______________________________
___________________
=
___________________
=
_____________________
= =
delta=16- 4*(-12)= 16+48=64
odp. -6,2, 1,-1