Answer:
B. 1/15
Step-by-step explanation:
x^2 - 14x + 49.
(x − 7)^2
= (x - 7)(x - 7)
= x(x - 7) - 7(x - 7)
= x^2 - 7x - 7x + 49
= x^2 - 14x + 49.