Question 855004
if c^2 - 8c -48 is the area 
(c-12) is one factor (length) and (c+4) is the other (width)
We don't know the value of c 
let's foil to get the trinomial
(c-12)*(c+4)
F- c^2
O- 4c
I- -12c
L- -12*4=-48
add them
c^2 - 8c -48