find all rational zeros of the polynomial P(x)=x^{4}-2x^{3}-6x^{2}-4x-16 its rational zeros are x1= x2= x3= x4= with x1≤x2≤x3≤x4 1/29/2014 | Dalia from Pleasantville, IA | 1 Answer | 0 Votes Mark favorite Subscribe Comment
Dalia, There are two and only two rational zeros of this polynomial: x = -2 and x = 4. To these we may also add x= ±√2i but I don't interpret the question of having asked for imaginary roots. 1/31/2014 | William S. Comment