Respuesta :

Answer:

A.

Step-by-step explanation:

(x − 7)^2=

=x^2 − 14x + 49

Answer:

x^2 -14x+49

Step-by-step explanation:

(x − 7)^2

(x-7) (x-7)

FOIL

first x*x = x^2

outer -7*x = -7x

inner -7*x = -7x

Last = -7*-7 = 49

Add them together

x^2 -7x-7x +49

x^2 -14x+49