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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade VIII - Simplification of Algebraic Fractions
Question
1
1.
Simplify
(
x
−
9
)
(
x
2
−
81
)
+
(
4
x
+
1
)
(
4
x
2
−
35
x
−
9
)
−
(
4
x
+
3
)
(
x
2
−
81
)
(
−
2
x
−
3
)
(
x
2
−
81
)
(
−
2
x
−
3
)
(
x
2
+
81
)
(
x
−
3
)
(
−
x
2
−
81
)
(
−
x
−
3
)
(
x
2
+
81
)
(
−
2
x
+
3
)
(
x
2
+
81
)
Question
2
2.
Simplify
(
x
2
+
2
x
−
15
)
(
x
2
−
25
)
+
(
x
2
+
12
x
+
32
)
(
x
2
+
3
x
−
40
)
(
2
x
+
1
)
(
x
−
5
)
(
2
x
+
1
)
(
x
+
5
)
(
2
x
−
1
)
(
x
+
5
)
(
3
x
+
1
)
(
x
+
5
)
(
4
x
+
1
)
(
−
x
−
5
)
Question
3
3.
Which of the following gives the L.C.M. of two or more polynomials?
( Product of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
( Product of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
( L.C.M. of numerical coefficients ) ✕ ( Each common factor raised to the lowest power )
( L.C.M. of numerical coefficients ) ✕ ( Each common factor raised to the highest power )
Question
4
4.
Simplify
(
x
2
−
5
x
)
(
2
x
−
3
y
)
÷
(
x
2
−
25
)
(
4
x
2
−
9
y
2
)
(
3
x
2
+
3
x
y
)
(
x
+
5
)
(
2
x
2
+
3
x
y
)
(
x
+
5
)
(
2
x
2
+
3
x
y
)
(
x
−
5
)
(
−
2
x
2
+
3
x
y
)
(
x
−
5
)
(
2
x
2
+
5
x
y
)
(
x
+
5
)
Question
5
5.
Simplify
(
x
2
+
5
x
+
4
)
(
x
2
+
2
x
+
1
)
(
2
x
+
4
)
(
x
−
1
)
(
x
−
4
)
(
x
−
1
)
(
4
x
+
4
)
(
−
2
x
+
1
)
(
x
+
4
)
(
x
−
1
)
(
x
+
4
)
(
x
+
1
)
Question
6
6.
Simplify
2
(
4
x
−
1
)
−
(
3
x
+
1
)
5
(
−
12
x
2
−
x
−
11
)
(
20
x
+
5
)
(
−
12
x
2
+
2
x
+
11
)
(
20
x
−
5
)
(
−
12
x
2
−
x
+
11
)
(
20
x
−
5
)
(
−
11
x
2
−
x
+
11
)
(
20
x
−
5
)
(
−
12
x
2
−
x
+
11
)
(
20
x
+
5
)
Question
7
7.
Simplify
(
x
2
−
36
)
(
x
2
−
64
)
÷
(
x
−
6
)
(
x
−
8
)
(
2
x
+
6
)
(
x
−
8
)
(
x
+
6
)
(
x
−
8
)
(
x
−
6
)
(
x
−
8
)
(
x
+
6
)
(
x
+
8
)
(
3
x
+
6
)
(
−
2
x
+
8
)
Question
8
8.
Find the L.C.M. of
6
x
and
48
x
2
48
x
3
6
x
288
x
3
48
x
4
48
x
2
Question
9
9.
Find the H.C.F. of
(
x
2
−
12
x
+
35
)
and
(
x
2
−
11
x
+
30
)
(
2
x
−
5
)
(
2
x
−
7
)
(
x
−
5
)
(
x
−
7
)
(
x
−
6
)
Question
10
10.
Simplify
(
x
+
y
)
(
x
2
−
x
y
)
✕
(
x
−
y
)
(
x
2
+
x
y
)
2
x
2
3
x
2
1
x
2
3
(
−
x
2
)
1
(
−
x
2
)
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