52, i am so sorry this is probably incorrect
Answer: A
Step-by-step explanation: with my calculation, and the information you have give i have to say it is A.
Polynomial with real coefficients always has even number of complex roots. We know that one of them is 2 + 5i so the second one will be 2 - 5i and:

Answer B.
The greatest common factor of two numbers, one of which is 1, will always be 1.
Answer:
264 cu
Step-by-step explanation:
This is because you have to add it from all sides, the first prism is 144 cu and then the second one is, 120, and when you add both of those together you get 264
<u><em>Thus the answer is....264</em></u>