Answer:
5i and -5i
Step-by-step explanation:
Imaginary roots come in pairs, so the third root must be a real number. Therefore, neither 5i nor -5i can be the third root.
D. 32/47
You would subtract 1580 from 640 to get 940. You would then simplify 640/940 to get 32/47.
The answer is 3.... 4*3=12 6*3 =18