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Class VI
Class VII
Class VIII
Class IX
Class X
CBSE Grade VIII - Algebraic Expressions and Identities
Question
1
1.
The value of
(
−
3
f
+
6
)
✕
(
−
9
f
g
+
4
g
)
✕
(
−
7
f
+
g
)
is
(
−
189
f
3
g
+
27
f
2
g
2
+
462
f
2
g
−
66
f
g
2
−
168
f
g
+
24
g
2
)
(
−
189
f
3
g
+
29
f
2
g
2
+
462
f
2
g
−
66
f
g
2
−
168
f
g
+
24
g
2
)
(
−
189
f
3
g
+
25
f
2
g
2
+
462
f
2
g
−
66
f
g
2
−
168
f
g
+
24
g
2
)
(
−
190
f
3
g
+
27
f
2
g
2
+
462
f
2
g
−
66
f
g
2
−
168
f
g
+
24
g
2
)
(
−
188
f
3
g
+
27
f
2
g
2
+
462
f
2
g
−
66
f
g
2
−
168
f
g
+
24
g
2
)
Question
2
2.
The value of
3
4
e
✕
1
2
e
is
3
8
e
2
3
10
e
2
1
2
e
2
1
8
e
2
5
8
e
2
Question
3
3.
The value of
(
5
t
−
6
)
✕
(
8
t
−
9
)
is
(
43
t
2
−
93
t
+
54
)
(
41
t
2
−
93
t
+
54
)
(
40
t
2
−
93
t
+
54
)
(
39
t
2
−
93
t
+
54
)
(
37
t
2
−
93
t
+
54
)
Question
4
4.
Which of the following terms can be added to
2
?
(
−
6
z
3
)
4
z
(
−
4
z
2
)
9
z
4
1
Question
5
5.
The value of
9
n
o
+
6
n
o
is
15
n
o
18
n
o
12
n
o
14
n
o
16
n
o
Question
6
6.
Which of the following terms is a like term of
5
v
4
?
4
v
4
(
−
7
)
7
v
2
(
−
8
v
)
8
v
3
Question
7
7.
The value of
1
3
z
+
2
3
z
+
2
3
z
+
1
3
z
is
z
2
z
3
z
(
−
z
)
4
z
Question
8
8.
The value of
(
−
8
a
)
+
(
−
4
a
)
is
(
−
14
a
)
(
−
12
a
)
(
−
11
a
)
(
−
9
a
)
(
−
13
a
)
Question
9
9.
Which of the following algebraic expressions is a zero polynomial?
(
6
x
3
y
2
−
5
x
2
y
2
z
2
−
5
x
y
3
z
2
)
(
−
2
x
2
y
3
z
3
)
0
(
2
x
y
2
z
3
−
7
y
z
3
)
(
5
x
3
−
5
x
2
y
3
z
−
3
x
2
y
3
+
7
x
z
2
)
Question
10
10.
The value of
92
✕
91
is
8371
8370
8372
8375
8373
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