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

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

in progress 0
Mary 2 weeks 2021-09-12T07:11:49+00:00 1 Answer 0

Answers ( )

    0
    2021-09-12T07:12:58+00:00

    Answer:

    The answers are not correct

    Step-by-step 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

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