Question

The polynomial function f(x)= 5x^5 + 16/5x -3 is graphed below. Which is a potential rational root of f(x) at point P ?

Answer 1

ANSWER

The root at point P may be $\frac{3}{5}$

EXPLANATION

The given function is

$f(x) = 5 {x}^{5} + \frac{16}{5} x - 3$

The potential rational roots are all factors of -3 expressed over all factors of 5.

These are:

$\pm \frac{1}{5} , \pm \frac{3}{5}$

Since the root of f(x) at P is closer to 1 that zero and it is positive , that potential may be $\frac{3}{5}$

Answer 2

The answer is a on edg