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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
1
2
x
✕
1
2
x
y
✕
1
2
w
✕
1
2
is
(
−
1
16
w
x
2
y
)
1
18
w
x
2
y
1
16
w
x
2
y
3
16
w
x
2
y
1
14
w
x
2
y
Question
2
2.
The sum of the expressions
(
−
3
w
+
1
)
,
(
5
w
+
8
)
,
(
7
w
+
8
)
,
(
−
5
w
+
35
)
,
(
w
−
9
)
is
(
4
w
+
43
)
(
5
w
+
46
)
(
5
w
+
40
)
(
5
w
+
43
)
(
6
w
+
43
)
Question
3
3.
Which of the following algebraic expressions is a binomial?
(
−
9
j
4
+
7
)
(
−
6
j
4
+
6
j
3
−
3
j
2
+
6
j
−
5
)
(
−
6
j
4
−
7
j
3
−
4
j
2
+
4
j
−
7
)
(
9
j
4
+
6
j
3
−
6
j
2
)
(
−
7
j
)
Question
4
4.
The value of
1
3
b
c
✕
1
3
c
✕
2
3
b
✕
1
2
b
is
1
9
b
3
c
2
1
25
b
3
c
2
1
29
b
3
c
2
1
27
b
3
c
2
(
−
1
27
b
3
c
2
)
Question
5
5.
The value of
5
u
✕
2
u
2
✕
u
is
8
u
4
11
u
4
12
u
4
9
u
4
10
u
4
Question
6
6.
The expanded form of
(
x
+
6
)
(
x
+
2
)
(
x
+
6
)
(
x
+
7
)
is
(
21
x
3
+
158
x
2
+
492
x
+
504
)
(
3
x
4
+
21
x
3
+
158
x
2
+
492
x
+
504
)
(
x
4
+
21
x
3
+
158
x
2
+
492
x
+
504
)
(
−
2
x
4
+
21
x
3
+
158
x
2
+
492
x
+
504
)
(
2
x
4
+
21
x
3
+
158
x
2
+
492
x
+
504
)
Question
7
7.
(
4
a
−
3
b
)
2
(
16
a
2
−
21
a
b
+
9
b
2
)
(
16
a
2
−
27
a
b
+
9
b
2
)
(
16
a
2
−
24
a
b
+
9
b
2
)
(
15
a
2
−
24
a
b
+
9
b
2
)
(
17
a
2
−
24
a
b
+
9
b
2
)
Question
8
8.
(
a
−
b
)
2
(
−
2
a
b
+
b
2
)
(
2
a
2
−
2
a
b
+
b
2
)
(
a
2
+
b
2
)
(
a
2
−
2
a
b
+
b
2
)
(
a
2
−
5
a
b
+
b
2
)
Question
9
9.
Which of the following algebraic expressions is a binomial?
(
−
8
w
2
x
+
6
x
2
y
2
)
(
3
w
3
x
2
y
2
+
3
w
2
x
3
y
2
+
w
2
x
y
3
−
3
w
x
)
(
−
w
3
x
3
y
2
−
4
w
3
x
y
3
+
6
w
2
x
3
y
−
5
x
2
y
)
(
8
w
3
x
3
y
+
9
w
2
−
2
x
y
)
(
−
w
3
x
y
2
)
Question
10
10.
The expanded form of
(
−
2
n
o
)
3
is
(
−
2
n
o
)
✕
(
−
2
n
o
)
✕
(
−
2
n
o
)
✕
(
−
2
n
o
)
✕
(
−
2
n
o
)
(
−
2
n
o
)
(
−
2
n
o
)
✕
(
−
2
n
o
)
(
−
2
n
o
)
✕
(
−
2
n
o
)
✕
(
−
2
n
o
)
(
−
2
n
o
)
✕
(
−
2
n
o
)
✕
(
−
2
n
o
)
✕
(
−
2
n
o
)
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