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The interval notation is: 
Step-by-step explanation:



Answer:
A no. is correct one
Step-by-step explanation:
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The best answer is A. The possible roots of this polynomial function 9i and -9i. It is possible that this polynomial function is a quadratic equation. It has a degree of two which means there are two roots and it is possible that the positive and negative value of 9i are its roots.