$\displaystyle 5x^3-x+2$

Does this polynomial have multiple roots?

How would I check if a polynomial has multiple roots or not?

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- Oct 27th 2010, 01:42 PMrlkmgmultiple roots polynomial
$\displaystyle 5x^3-x+2$

Does this polynomial have multiple roots?

How would I check if a polynomial has multiple roots or not? - Oct 27th 2010, 01:49 PMAlso sprach Zarathustra
Only one root... use calculus theorems...

- Oct 28th 2010, 09:24 AMTheCoffeeMachine
If $\displaystyle f(x) = x^3+px+q$, then the discriminant $\displaystyle \Delta = -4p^3-27q^2$.