Question 1062466
Hi there,
(2 - x)(x + 4) = 8 - 2x - x^2 
Curve cuts x axis at:-
2 - x = 0
-x = -2
x = 2
x + 4 = 0
x = -4
 -4 <= x =< 2
This is the part of the curve on and above the x axis (x => 0)
Hope this helps :-)