Answer:

Step-by-step explanation:

Apply sum of cubes formula: 


Imaginary numbers are not rational which may lead you to believe that they must be irrational. Though logical, you would still be incorrect because “irrational” also applies only to real numbers.
Step-by-step explanation:
<span>The definition of a perfect cube is a number that is the result of multiplying an integer by itself three times
Hope it helps</span>