Final answer:
To perform the operations, we expand the given expression using the distributive property and the FOIL method to get 9w^4 - 49z^2.
Step-by-step explanation:
To perform the indicated operations, we will use the distributive property. The given expression is (3w^2 + 7z)(3w^2 - 7z). To expand this expression, we multiply each term in the first parentheses by each term in the second parentheses. Using the FOIL method, we get 9w^4 - 49z^2.
Learn more about expanding expressions