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Class VI
Class VII
Class VIII
Class IX
Class X
CBSE Grade IX - Polynomials
Question
1
1.
Which of the following algebraic expressions is a binomial?
(
5
s
3
−
9
s
2
)
(
−
7
s
4
)
(
−
5
s
4
+
7
s
3
+
5
s
2
+
7
s
−
7
)
(
6
s
4
+
4
s
−
3
)
(
2
s
4
−
3
s
3
−
5
s
2
+
4
s
+
6
)
Question
2
2.
(
16
x
2
y
3
+
64
x
2
y
2
)
÷
4
x
y
=
(
16
x
y
2
z
+
4
x
y
2
)
(
4
x
2
y
4
+
16
x
y
)
(
4
x
y
2
+
16
y
2
)
(
4
x
2
y
3
+
16
x
y
)
(
4
x
y
2
+
16
x
y
)
Question
3
3.
The expanded form of
(
x
−
3
)
(
x
−
9
)
(
x
+
5
)
(
x
−
8
)
is
(
−
15
x
3
+
23
x
2
+
399
x
−
1080
)
(
3
x
4
−
15
x
3
+
23
x
2
+
399
x
−
1080
)
(
x
4
−
15
x
3
+
23
x
2
+
399
x
−
1080
)
(
2
x
4
−
15
x
3
+
23
x
2
+
399
x
−
1080
)
(
−
x
4
−
15
x
3
+
23
x
2
+
399
x
−
1080
)
Question
4
4.
Which of the following is a factor of
(
7
x
4
+
y
3
z
5
)
?
y
3
7
x
4
no factors
y
3
z
5
x
z
4
Question
5
5.
Which of the following are true?
a)
π
r
2
is a monomial
b)
A binomial may have degree 3
c)
Degree of zero polynomial is zero
d)
A binomial has two and only two terms
e)
Every polynomial is a binomial
{c,a,b}
{e,b}
{a,b,d}
{c,a}
{c,e,d}
Question
6
6.
The value of the polynomial
(
−
5
x
−
2
)
at
x
=
(-2)
is
7
8
10
9
6
Question
7
7.
Factorize
(
6
a
−
3
b
)
3
+
(
3
b
−
2
c
)
3
+
(
2
c
−
6
a
)
3
3
(
6
a
−
3
b
)
(
3
b
−
2
c
)
(
2
c
−
6
a
)
3
(
6
a
−
3
b
)
(
3
b
+
2
c
)
(
2
c
+
6
a
)
3
(
6
a
−
3
b
)
(
3
b
−
2
c
)
(
2
c
+
6
a
)
3
(
6
a
+
3
b
)
(
3
b
−
2
c
)
(
2
c
−
6
a
)
3
(
6
a
−
3
b
)
(
3
b
+
2
c
)
(
2
c
−
6
a
)
Question
8
8.
Factorize
(
54
x
y
+
45
y
2
)
9
y
(
−
6
x
−
5
y
)
9
y
(
6
x
−
5
y
)
9
x
(
6
x
+
5
y
)
9
y
(
6
x
+
5
y
)
9
x
(
6
x
−
5
y
)
Question
9
9.
(
2
x
4
+
12
x
3
+
16
x
2
)
÷
(
2
x
2
+
4
x
)
4
x
(
x
2
+
4
x
)
(
x
2
−
4
x
)
(
−
x
2
+
4
x
)
(
x
2
+
5
x
)
Question
10
10.
(
a
+
b
+
c
)
2
(
a
2
+
2
a
b
+
2
a
c
+
b
2
+
2
b
c
+
c
2
)
(
2
a
2
+
2
a
b
+
2
a
c
+
b
2
+
2
b
c
+
c
2
)
(
2
a
b
+
2
a
c
+
b
2
+
2
b
c
+
c
2
)
(
a
2
+
5
a
b
+
2
a
c
+
b
2
+
2
b
c
+
c
2
)
(
a
2
−
a
b
+
2
a
c
+
b
2
+
2
b
c
+
c
2
)
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