Answer:
Step-by-step explanation:
In this problem, we are expected to perform a subtraction operation on two numbers and leave the answer in scientific notation.
6.24x10^12 and 4.89×10^10
6.24x10^12 -4.89×10^10
Let us make the number on the left to have the same indices as the one on the right.
624x10^10-4.89x10^10
We can now subtract the numbers since they have similar indices
(624-4.89)x10^10
619x10^10