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Question 454981: I need help with this problem:
For P(x)=x^18+15^13+6^3-5x-1 with justification, list all possible rational zeros. For the same polynomial above, use Descarte´s Rule of Signs to determine how many positive real roots are possible.
Thank you very much.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! For P(x)=x^18+15^13+6^3-5x-1 with justification, list all possible rational zeros. For the same polynomial above, use Descarte´s Rule of Signs to determine how many positive real roots are possible.
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Possible Real Roots are p/q where p is a factor of -1 and q is a factor of 1
Possible Real Roots are +1 or -1
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Decarte's Rule
P(x) has one change of sign.
# of positive real roots = # of changes of sign - {0 or 2 or 4 etc}
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Additional information can be found using Google to
search for "DesCarte's Rule of Signs".
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Cheers,
Stan H.
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