I need your help once again, Brian

Step-by-step explanation:

Again, we can use FOIL to expand this equation:

First:

Outer:

Inner:

Last:

We can combine the b terms to get , and we have our answer as

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents