SOLUTION: Hello friends, I am trying to use the rational roots theorem to find the zeros it has failed every time I know the graph crosses the x axis . I have tried the P/q and listed ever

Question 967777: Hello friends, I am trying to use the rational roots theorem to find the zeros it has failed every time I know the graph crosses the x axis . I have tried the P/q and listed every possible factor . Here is the polynomial . -x^3+3x^2+5 . I must be missing a detail. Thank you in advance !!!!
Answer by josgarithmetic(39629) (Show Source): You can put this solution on YOUR website!
Are you forgetting the x term in the dividend for synthetic division?

Repeating: Are you forgetting the term in the dividend for synthetic division?

Also, are you SURE that this polynomial has RATIONAL roots? If you have some indication that your polynomial crosses or touches the x-axis, then this means it has some or at least one REAL root.

Try using a software-based graphing tool. You will find only one real root, very very near to 3.426, but less than this quantity. The one real root is irrational.
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