Question

Graph question... I'll attach first a doc. then a pdf.

Answer 1

Difference of two squares since the graphs equation is:
\[y = (x+2)(x-2) = x^2 - 2x + 2x -4 = x^2 - 4\]
4 is 2^2 therefore:
\[y =x^2 - 2^2\]
which is indeed difference of two squares :)