Question

If f(x)=×^2-81andg(x)​

Answer 1

9514 1404 393

Answer:

  the correct choice is marked

Step-by-step explanation:

  $f(x)\cdot g(x)=(x^2-81)\dfrac{x+9}{x-9}=\dfrac{(x-9)(x+9)(x+9)}{(x-9)}\\\\=\boxed{(x+9)^2}$