factor 243p^5+q^15

Since you have powers of p and q by themselves in separate terms, it cannot be factored. Are you sure you copied the question correctly?

To factor the expression 243p^5 + q^15, we need to look for common factors in both terms. However, since p and q have different exponents in separate terms and cannot be combined, we cannot simplify or factor this expression further. It is important to double-check the expression you provided to confirm that it is correct and can be factored.