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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade VII - Factorisation
Question
1
1.
Which of the following gives the H.C.F of two or more polynomials?
( Product of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
( Product of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
( H.C.F. of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
( H.C.F. of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
Question
2
2.
Factorize
(
25
x
2
−
15
x
y
−
18
y
2
)
(
5
x
−
3
y
)
(
5
x
+
6
y
)
(
5
x
+
3
y
)
(
5
x
+
6
y
)
(
5
x
−
3
y
)
(
5
x
−
6
y
)
(
5
x
+
3
y
)
(
5
x
−
6
y
)
(
5
x
+
3
y
)
(
5
x
−
3
y
)
Question
3
3.
Factorize
(
a
x
+
b
y
)
2
−
(
a
x
−
b
y
)
2
4
a
x
b
y
2
(
a
x
)
2
(
b
y
)
2
4
(
a
x
)
2
(
b
y
)
2
2
a
x
b
y
Question
4
4.
Which of the following are true?
a)
Every polynomial is a binomial
b)
π
r
2
is a monomial
c)
A binomial has two and only two terms
d)
Degree of zero polynomial is zero
e)
A binomial may have degree 3
{a,b}
{a,b,c}
{b,c,e}
{a,d,e}
{d,c}
Question
5
5.
Factorize
(
64
x
2
−
16
y
2
)
(
8
x
+
4
y
)
(
8
x
+
4
y
)
(
8
x
+
2
y
)
(
8
x
−
8
y
)
(
8
x
−
2
y
)
(
8
x
+
8
y
)
(
8
x
−
4
y
)
(
8
x
−
4
y
)
(
8
x
+
4
y
)
(
8
x
−
4
y
)
Question
6
6.
Factorize
(
56
x
y
+
16
y
2
)
8
y
(
7
x
−
2
y
)
8
y
(
−
7
x
−
2
y
)
8
x
(
7
x
−
2
y
)
8
y
(
7
x
+
2
y
)
8
x
(
7
x
+
2
y
)
Question
7
7.
Factorize
(
15
x
2
+
2
x
y
−
24
y
2
)
(
3
x
+
4
y
)
(
5
x
+
6
y
)
(
3
x
−
4
y
)
(
5
x
−
6
y
)
(
3
x
+
4
y
)
(
5
x
−
6
y
)
(
3
x
+
4
y
)
(
3
x
+
4
y
)
(
3
x
−
4
y
)
(
5
x
+
6
y
)
Question
8
8.
Factorize
(
a
2
−
b
2
)
(
−
a
+
b
)
(
−
a
−
b
)
b
(
−
b
)
(
−
2
a
+
b
)
(
−
2
a
−
b
)
(
−
a
+
4
b
)
(
−
a
+
b
)
(
−
a
−
b
)
(
−
a
−
3
b
)
Question
9
9.
Factorize
(
x
2
+
2
x
a
+
3
x
+
a
2
+
3
a
−
40
)
(
x
−
a
−
5
)
(
x
+
a
−
8
)
(
x
−
a
+
8
)
(
x
+
a
+
5
)
(
x
+
a
+
8
)
(
x
−
a
−
5
)
(
x
+
a
+
8
)
(
x
+
a
−
5
)
(
x
+
a
−
5
)
(
x
−
a
+
8
)
Question
10
10.
Factorize
(
4
x
3
−
18
x
2
+
6
x
+
28
)
(
x
−
2
)
(
5
x
+
2
)
(
4
x
−
7
)
(
x
−
2
)
(
x
+
2
)
(
x
−
7
)
(
x
−
2
)
(
−
x
+
2
)
(
−
7
)
(
x
−
2
)
(
3
x
+
2
)
(
3
x
−
7
)
(
x
−
2
)
(
2
x
+
2
)
(
2
x
−
7
)
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