Answer:
=6960000 or 6.96 x 10^6
Step-by-step explanation:
1. remove unnecessary parentheses
7 x 10^6 - 4 x 10^4
2. factor the expression
(7 x 10^2 - 4) x 10^4
3. evaluate the power
(7 x 100 - 4) x 10000
4. multiply the numbers
(700 - 4) x 10000
5. subtract the numbers
696 x 10000
6. Multiply the numbers
=6960000
or
6.96 x 10^6
