Use the Rational Roots Test to Find All Possible Roots f(x)=5x^4-4x^3+19x^2-16x-4

$f (x) = 5 x^{4} - 4 x^{3} + 19 x^{2} - 16 x - 4$

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.

$p = \pm 1, \pm 2, \pm 4$

$q = \pm 1, \pm 5$

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

$\pm 1, \pm \frac{1}{5}, \pm 2, \pm \frac{2}{5}, \pm 4, \pm \frac{4}{5}$

Use the Rational Roots Test to Find All Possible Roots f(x)=5x^4-4x^3+19x^2-16x-4

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