Question

If f(x) = 3x4 + 2x3 – X + 15,what would be the list ofpossible rational roots?a) + 1, 5, 1,3,5,15b) +1,3,5,15c) }, 1, 3, 5, 15d) 1, 2, 3, 6, 9, 18

Answer 1

$\begin{gathered} f(x)=3x^4+2x^3-x+15 \\ p=15 \\ q=3 \\ \frac{p}{q}=\pm15,\pm5,\pm\frac{1}{3}\pm1,\pm3 \\ \\ \text{All possibole rational roots are }\pm15,\pm5,\pm\frac{1}{3}\pm1,\pm3,\text{ option c} \end{gathered}$