Question

How many negative roots can this polynomial function possibly have?
f(x) = 5x4 – 7x3 – x2 – 3x – 2

Answer 1

$f(x)=\fbox5x^4-7x^3-x^2-3x-\fbox2\\\\2\to \pm1;\ \pm2\\5\to\pm1;\ \pm5\\\\Answer:\{-1;-2; -5; -\dfrac{1}{5};-\dfrac{2}{5}\}\Rightarrow5\ negative\ roots$