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22 December, 22:57

Which are real zeros of this function x^3+2x^2-9x-18

a 1,2,3

b 3,-3,2

c 2,3,-6

d 1,-1,18

e - 2,3,-3

+2
Answers (1)
  1. 22 December, 23:26
    0
    To solve the problem shown above, you must follow the proccedure shown below:

    1. You the following polynomial of degree 3:

    x^3+2x^2-9x-18

    2. When you factor it, you obtain:

    (x+2) (x-3) (x+3) = 0

    3. Then, you obtain:

    x1=-2

    x2=3

    x3=-3

    4. Therefore, the correct answer is the last option (option e), which is shown below:

    e) - 2,3,-3
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