Answer:
15 18 21 are the answer hope it's useful
69.6 is the answer to ur question
Answer:
We just need to evaluate and get f(2i)=0, f(-2i)=0.
Step-by-step explanation:
Since
, then
, and we can apply this when we evaluate
for 2i and -2i.
First we have:

Which shows that 2i is a zero of f(x).
Then we have:

Which shows that -2i is a zero of f(x).
This would =65. any more questions feel free to ask :) happy to help out