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Posted by **Chelsea** on Wednesday, February 1, 2012 at 4:05pm.

x^3 -7x^2 +13x -7=0

- Math -
**Steve**, Wednesday, February 1, 2012 at 5:50pmpossible rational roots are ±1,±7

division show 1 is a root

x^3 -7x^2 +13x -7 = (x-1)(x^2 - 6x + 7)

so the roots are 1 and 3±√2

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