Answer: 830.5 x 10^6
Alternative form: 830500000, 8.305 x 10^8
Explanation:
(8.4 x 10^8) − (9.5 x 10^6) <- rewrite the expression
8.4 x 10^8 - (9.5 x 10^6) <-- factor the expression
(8.4 x 10^2 - 9.5) x 10^6 <-- Evaluate the power
(8.4 x 100 - 9.5) x 10^6 <-- Multiply the numbers
(840 - 9.5) x 10^6 <-- subtract the numbers
830.5 x 10^6