Answer :
Final answer:
The value of (28)^3 + (-15)^3 + (-13)^3 is -98,139. So, when we add the cubes of positive and negative numbers together, the negatives will cancel out the positives, resulting in a negative answer. Therefore, the value of (28)^3 + (-15)^3 + (-13)^3 is -98,139 (option b).
Explanation:
Without calculating the cubes, we can still find the value of (28)^3 + (-15)^3 + (-13)^3 using the concept of additive inverse.
The cube of a positive number will always be positive, and the cube of a negative number will always be negative.
So, when we add the cubes of positive and negative numbers together, the negatives will cancel out the positives, resulting in a negative answer.
Therefore, the value of (28)^3 + (-15)^3 + (-13)^3 is -98,139 (option b).
