Use the Rational Roots Test to Find All Possible Roots x^4+x^3-11x^2-9x+18

$x^{4} + x^{3} - 11 x^{2} - 9 x + 18$

If a polynomial function has integer coefficients, then every rational zero will have the form $\frac{p}{q}$ where $p$ is a factor of the constant and $q$ is a factor of the leading coefficient.

$p = \pm 1, \pm 2, \pm 3, \pm 6, \pm 9, \pm 18$

$q = \pm 1$

Find every combination of $\pm \frac{p}{q}$ . These are the possible roots of the polynomial function.

$\pm 1, \pm 2, \pm 3, \pm 6, \pm 9, \pm 18$

Use the Rational Roots Test to Find All Possible Roots x^4+x^3-11x^2-9x+18

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