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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade X - Quadratic Equations
Question
1
1.
Solve :
6
x
2
+
2
a
x
+
3
x
+
a
= 0
−
a
3
,
−
1
2
−
3
a
7
,
−
1
−
a
9
,
1
2
−
5
a
9
,
−
3
2
−
3
a
11
,
−
1
4
Question
2
2.
Solve :
(
x
(
x
−
2
)
)
2
+
0
(
x
(
x
−
2
)
)
−
49
= 0
11
5
,
3
2
3
,
5
2
3
,
9
4
5
3
,
5
4
7
3
,
7
4
Question
3
3.
Solve :
15
x
2
b
4
−
4
a
x
b
2
−
3
a
2
= 0
0
,
a
b
2
−
a
4
b
2
,
3
a
7
b
2
−
2
a
3
b
2
,
a
5
b
2
−
a
3
b
2
,
3
a
5
b
2
−
a
2
b
2
,
a
b
2
Question
4
4.
Solve :
20
x
2
a
4
b
2
−
31
x
a
2
b
+
12
= 0
1
2
a
2
b
,
4
7
a
2
b
3
4
a
2
b
,
4
5
a
2
b
3
2
a
2
b
,
4
3
a
2
b
5
4
a
2
b
,
6
5
a
2
b
1
4
a
2
b
,
2
5
a
2
b
Question
5
5.
Find the roots of the quadratic equation
(
x
2
−
15
x
+
54
)
=
0
(
10
,
5
)
(
10
,
6
)
(
11
,
4
)
(
11
,
5
)
(
9
,
6
)
Question
6
6.
Find the quadratic equation, the sum of whose roots is
2
3
and product is
1
9
(
9
x
2
−
6
x
+
1
)
=
0
(
8
x
2
−
6
x
+
1
)
=
0
(
10
x
2
−
6
x
+
1
)
=
0
(
9
x
2
−
4
x
+
1
)
=
0
(
9
x
2
−
8
x
+
1
)
=
0
Question
7
7.
Solve :
18
x
2
−
3
x
−
12
x
b
+
2
b
= 0
1
6
,
6
b
9
−
1
6
,
4
b
9
1
8
,
6
b
11
1
4
,
6
b
7
1
2
,
8
b
9
Question
8
8.
Find the quadratic equation, the sum of whose roots is
-11
and product is
18
(
11
x
+
18
)
=
0
(
x
2
+
8
x
+
18
)
=
0
(
x
2
+
14
x
+
18
)
=
0
(
x
2
+
11
x
+
18
)
=
0
(
2
x
2
+
11
x
+
18
)
=
0
Question
9
9.
Find the roots of the quadratic equation
(
48
x
2
+
40
x
+
8
)
=
0
(
1
3
,
-1
)
(
(
-1
5
)
,
-1
)
(
(
-1
5
)
,
(
-1
2
)
)
(
1
3
,
(
-3
2
)
)
(
(
-1
3
)
,
(
-1
2
)
)
Question
10
10.
Find the roots of the quadratic equation
(
x
2
+
13
x
+
36
)
=
0
(
-1
,
-11
)
(
-3
,
-9
)
(
-4
,
-9
)
(
-3
,
-10
)
(
-1
,
-10
)
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