Name:
Date:
Simplify.
1)
[
7
8
]
+
[
-5
-12
]
2)
[
6
4
-3
-4
-10
-2
]
+
[
5
-2
7
2
5
8
]
3)
[
-8
x
3
x
+
y
-6
x
-3
x
]
+
[
2
-4
3
y
8
]
4)
[
3
4
-4
-2
-7
-4
]
+
[
1
-1
6
1
4
10
]
5)
-4
x
[
3
x
10
y
2
2
x
10
]
6)
[
4
5
]
+
[
7
8
]
7)
[
3
p
+
q
p
-
9
]
+
[
-6
-3
p
q
]
8)
-5
[
-7
0
0
5
]
9)
[
1
2
4
-3
2
1
]
+
3
[
-2
3
2
4
-3
-2
]
10)
4
[
7
8
4
-3
]
-
[
3
38
-3
-6
]
11)
10
[
-5
3
-10
]
12)
[
6
1
]
+
[
-3
-5
]
13)
-
3
z
[
-
8
y
-
9
z
-
6
z
-
10
y
]
14)
10
p
[
0
10
0
2
q
]
15)
[
x
+
2
y
x
-
6
]
+
[
-5
-4
x
y
]
16)
-6
[
-2
0
0
10
]
17)
[
9
2
]
+
[
-6
-10
]
18)
9
[
2
8
]
19)
[
-
3
x
+
2
y
-
2
x
10
z
]
+
[
3
x
-
4
y
-
8
x
+
3
]
20)
[
10
4
]
+
[
-3
-9
]
Answers:
1)
[
2
-4
]
2)
[
11
2
4
-2
-5
6
]
3)
[
-8
x
+
2
3
x
+
y
-
4
-6
x
+
3
y
-3
x
+
8
]
4)
[
4
3
2
-1
-3
6
]
5)
[
-12
x
2
-40
x
y
2
-8
x
2
-40
x
]
6)
[
11
13
]
7)
[
3
p
+
q
-
6
p
-
9
-
3
p
q
]
8)
[
35
0
0
-25
]
9)
[
-5
11
10
9
-7
-5
]
10)
[
25
-6
19
-6
]
11)
[
-50
30
-100
]
12)
[
3
-4
]
13)
[
24
z
y
27
z
2
18
z
2
30
z
y
]
14)
[
0
100
p
0
20
p
q
]
15)
[
x
+
2
y
-
5
x
-
6
-
2
x
y
]
16)
[
12
0
0
-60
]
17)
[
3
-8
]
18)
[
18
72
]
19)
[
2
y
-
2
x
-
4
y
10
z
-
8
x
+
3
]
20)
[
7
-6
]
