Please factorize fully, the following polynomials, who can help me?

2011-10-10 1:01 pm
x^3 + x^2 - x - 10

x^4 - 3x^2 - 6x + 8

-5x^3 - 9x^2 - 3x +1

THANKS! AND PLEASE EXPLAIN!~
更新1:

please show working steps : )

回答 (1)

2011-10-10 1:08 pm
✔ 最佳答案
(x -2)*(x^2 +3*x +5) = 0


(x -1)*(x -2)*(x^2 +3*x +4) = 0


-5*(x +1)*(x +1)*(x -0.2) = 0


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