a
1
b
2
c
-
3
s
h
o
w
c
o
n
d
i
t
i
o
n
f
o
r
d
o
m
a
i
n
o
f
s
q
u
a
r
e
r
o
o
t
a
n
d
r
i
g
h
t
s
i
d
e
s
i
m
p
l
i
f
i
e
d
c
o
n
d
i
t
i
o
n
s
q
u
a
r
e
e
x
p
a
n
d
s
i
m
p
l
i
f
y
s
o
l
v
e
s
h
o
w
s
o
l
u
t
i
o
n
S
o
l
v
e
t
h
e
e
q
u
a
t
i
o
n
:
(
x
-
2
)
(
x
-
1
)
x
+
3
(
x
≤
1
∨
x
≥
2
)
∧
x
≥
-
3
-
3
≤
x
≤
1
∨
x
≥
2
(
x
-
2
)
(
x
-
1
)
2
(
x
+
3
)
2
x
-
3
x
+
2
2
x
+
6
x
+
9
-
9
x
-
7
x
7
9
x
7
9