Question

5. Multiple Choice What are all the rational

zeros of f(x) = – x2 – 17x – 157
A -3, - 1,5
B - 3, 1, 5
© -5, -1, 3
D – 5, 1, 3
E – 1, 3, 5

Answer 1

The answers are not correct

Explanation:

For finding the rational zeros of this function, we need to resolve this equation:

`-x^(2) -17x-157 = 0\\`

multiplying by -1 on both sides

`x^(2) + 17x + 157 = 0`

And now we can use the general solution of a cuadratic equation:

`x = \frac{-b+\sqrt{b^(2)-4ac } }{2a}`

Where

a = 1

b = 17

c = 157

This equation does not have real solutions

Maybe you could verify if the function is written correctly