The Remainder Theorem states that if a polynomial \( f(x) \) is divided by \( x - c \), the remainder of that division is \( f(c) \). If \( f(c) = 0 \), it means that \( x - c \) is a factor of the polynomial \( f(x) \).
Given that \( f(12) = 0 \), we can conclude that \( x - 12 \) is a factor of \( f(x) \).
Thus, the correct answer is:
(x−12).