Question

Find the product of (x − 7)2.

A. x2 − 14x + 49
B. x2 + 14x + 49
C. x2 − 49
D. x2 + 49

Answer 1

A.

Explanation:

(x − 7)^2=

=x^2 − 14x + 49

Answer 2

x^2 -14x+49

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