Answer:
5 * 10^10
Step-by-step explanation:
(9 * 10^10) - (4 * 10^10)
If the * 10^x are both the same then just take the numbers away.
5×10 to the tenth power
(9×10^10)-(4×10^10)
remove the parenthesis
9×10^10-4×10^10
then you need to collect like terms so you subtract 9-4
and get 5×10^10
final answer:5×10 to the tenth power
