The value would be zero (0) bcuz if all ends up being 0 no matter how many zeros then yes it would be 0 as the value
A or c am not completely sure I am 90% sure or is I
For this case we must multiply the following expression:

Applying distributive property we have:

By definition of multiplication of powers of the same base, we have to put the same base and add the exponents:

Adding similar terms:

Answer:
