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Answer:
The zeros of the given function are -9,-1 and 12.
Step-by-step explanation:
The given function is
It is given that the x-intercept of the graph is -9, therefore -9 is a zero of the function.
Since -9 is the zero of the function, therefore (x+9) is a factor of f(x). Use synthetics method or long division method to divide the function by (x+9).
Use zero product property and quote each factor equal to 0.
Therefore zeros of the given function are -9,-1 and 12.
