Mathematics
Kaileialex5
2015-11-02 01:55:21
Which of the following is a factor of x^3-4x^2-18x+9
ANSWERS
Nico00
2015-11-02 05:44:23

(x-2)(x^2-7x+3) most likely

Valrocks123
2015-11-02 05:45:38

Hello, [latex]x^3-4x^2-18x+9\ =x^3+3x^2-7x^2-21x+3x+9\ =x^2(x+3)-7x(x+3)+3(x+3)\ =(x+3)(x^2-7x+3)\ =(x+3)(x- frac{7- sqrt{37}}{2} )(x- frac{7+ sqrt{37}}{2} )[/latex]

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