Do I get rid of the parenthesis?

Question

In a function notation equation, for example:

f(x) = x² - 1; Find f(-6)

When I am plugging in (-6), do I keep the parenthesis, resulting in my answer being 35?

Answer 1

Yes, you need to keep the parenthesis when you plug in -6, the answer you have is correct. Without the parenthesis, you would get -36-1, which is not correct.

Answer 2

If you are given f(x), then----To find f(n), you replace x with n