lf (x + k) is a factor of f(x), which of the following must be true? F(k)=0 f(-k)=0 a root of f(k) is x=k a y intercept of f(k) is x=-k

lf x k is a factor of fx which of the following must be true Fk0 fk0 a root of fk is xk a y intercept of fk is xk class=