help me

J

jenjen00

[TEX]x^4 - 2x^2 + 1 - 3x^3 + 3x - 9x^2 + 9 [/TEX]
[TEX] = (x^2 - 1 )^2 - 3x (x^2 - 1 ) - 9 ( x^2 - 1 ) [/TEX][TEX] = (x^2 - 1 ) ( x^2 - 3x - 10 ) [/TEX]
tích các nghiệm : 5 *1*-1*-2 = 10
 
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