Question

(x + 4) (x + 2) = x² +8
substitute x=minus3​

Answer 1

(-3+4)(-3+2)=-3×(-3)+8

1-1=9+8

0=18

hope its correct

Answer 2

(-3+4)(-3+2) = (-3)² +8
1(-1) = -9+8
-1 = -1
Both sides are equal