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solve for x: x^3 -1.5x^2 + 200x + 20000?
it's part of a longer calculus problem
i'm thinking one answer should be 66 2/3
but i cannot get it for the life of me
2 Answers
- DonLv 41 decade agoFavorite Answer
This is going to be tough! You have to use the rational root theorem where p/q equals possible roots.
In this case p/q is all the factors of the constant over all the factors of the leading coefficient.
That's ALL the factors of 20000! Good grief!
I would skip all that and just graph it or use POLY on your calculator.
Good luck!
EDIT: I used POLY on my calculator and did not get 66 2/3. However I did get -- for one zero:
-24.2536278225
BTW, I love the rain too! I'm from Oregon!! :)
Have a good day!