Final answer:
To expand 10^4, you can multiply 10 by itself 4 times, which equals 10,000.
Step-by-step explanation:
When the number 10 is raised to a power, it represents multiplying 10 by itself the given number of times.
In this case, 10^4 means multiplying 10 by itself 4 times.
So, 10^4 can be expanded as 10 * 10 * 10 * 10.
By multiplying these numbers together, we get the answer in expanded form, which is 10,000.