Question

Find the product of (x + 7)(x − 7).

x2 − 14x + 49

x2 − 49

x2 + 14x + 49

x2 + 49

Answer 1

Difference of two perfect squares

Answer 2

\[a^2-c^2\]

Answer 3

FOIL.

First, inner, outer, last.

Multiple x and x.
Multiple x and -7
Multiple 7 and x.
Multiple 7 and -7.

It's be the difference of two squares.