Question

evaluate the following product (3a^2-4b^2) (3a^2 + 5b^2)​

Answer 1

Answer:

3a^2(3a^2+5b^2) -4b^2(3a^2+5b^2)

9a^4+15a^2b^2-12a^2b^2-20b^4

9a^4+3a^2b^2-20b^4