Question 247882
(4a+4)(3a-3)
use foil
f
4a*3a
o
4a*-3
i
4*3a
L
4*-3
add them
12a^2-12a+12a-12
12a^2-12
this is a parabola

12(a^2-1)
12(a-1)(a+1)