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schemat Hornera
1 4 2 8
1 0 2 0
(x³+4x²+2x+8):(x+4)=x²+2
x²+6x+8=(x+3)²-9+8=(x+3+1)(x+3-1)=(x+4)(x+2)
D: x∈R\{-4,-2}
mnoze razy (x+4)*(x+2)(x²+2)
3x·(x+2)-2(x²+2)=0
3x²+6x-2x²-4=0
x²+6x-4=0
(x+3)²-9-4=0
|x+3|=√13
x=-3+√13 ∨ x=-3+√13
pozdr
Hans