Because b^6 is present in both terms, we can factor it out.
b^6(7 + 12)
Combine like terms.
b^6(19)
Rearrange.
19b^6 is the fully simplified form of the given expression.
Answer is d
it would be b^12
Use m-a-t-h-w-a-y they are awesome. Or m-y-m-a-t-h-l-a-b