x
?
+
____________________
+
9
=
(
____________________
+
____________________
)
²
x
?
?
____________________
+
4
=
(
x³
+
____________________
)
²
a
?
+
____________________
?
+
1
=
(
a
?
+
____________________
)
²
m¹
?
?
16m
?
+
____________________
=
(
m
?
?
____________________
)
²
