Answer:
πx² -6πx + 9π
or
π(x² - 6x + 9)
Step-by-step explanation:
area = πr² = π(x-3)² = π(x² - 6x + 9) = πx² - 6πx + 9π
bearing in mind that an explicit form is simply the sequence written as a function of some variables, so we simply simplify and add like-terms.
To do his work that he didn't want to do.
I think it's A and D