He is wrong because as long as they have the same terms/ variables behind the number it doesn’t matter about if it is positive or negative
Answer:
-49x - 18 is the final answer!
The first thing you should do is to determine all the zeros, and you will have 7, -11, 2 + 6i, 2 - 6i.
After that you have to <span>subtract and (x) from every each zero that you have above, which means
</span>

<span>And the last step is to multiply them together, and that's all you need!
</span>

<span>I am pretty sure that everything hase become clear! Regards.</span>
i think the answer is 56.55