An expression is given.



�
2
+
�
�
−
12
x
2
+zx−12



The expression can be written as
(
�
+
�
)
(
�
+
�
)
(x+q)(x+r), where
�
,
�
,
q,r, and
�
z are integers.



What are possible integer values of
�
,
�
,
q,r, and
�
z?



�
=
q=



�
=
r=




�
=
z=