Hi, could you please tell me how to get the real rational zeros of the function;

f (x) = x3 + x + 1

I'm having trouble with it; P/Q gave me +/- 1 but I couldn't go any further. Thank You.

Question

Hi,  could you please tell me how to get the real rational zeros of  the function;

f (x)  =  x3 + x + 1

I'm having trouble with it;  P/Q gave me +/- 1 but I couldn't go any further.  Thank You.

anonymous · Answer

MJMATH, this function has no rational roots.

anonymous · Answer

The rational roots theorem gives you the possibilities for rational roots.  If none of these check out, the polynomial does not have rational roots.

anonymous · Answer

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anonymous · Answer

haha, thank you :D