The polynomial p(x)=x^5-9x^4+13x^3+57x^2-86x-120 has how many zeros

The polynomial p(x) = x^5 − 9x^4 + 13x^3 + 57x^2 − 86x − 120 has a total of 5 zeroes. It can have a maximum of 3 positive real roots and a maximum of 2 negative real roots.

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“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .