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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade X - Quadratic Equations
Question
1
1.
Solve :
36
x
2
+
47
b
x
+
15
b
2
= 0
−
b
3
,
−
b
4
−
5
b
7
,
−
3
b
2
−
5
b
9
,
−
3
b
4
−
5
b
11
,
−
b
2
−
7
b
9
,
−
5
b
4
Question
2
2.
Solve :
4
x
2
−
4
a
2
b
x
+
a
4
b
2
= 0
2
a
2
b
4
,
a
2
b
2
0
,
−
a
2
b
2
a
2
b
,
a
2
b
a
2
b
3
,
a
2
b
4
a
2
b
,
3
a
2
b
2
Question
3
3.
The product of the roots of the quadratic equation
(
18
x
2
+
87
x
+
27
)
=
0
is
5
4
1
2
3
2
5
2
2
Question
4
4.
Find the discriminant of the quadratic equation
(
3
x
2
+
8
x
+
4
)
=
0
17
14
15
16
18
Question
5
5.
Solve the quadratic equation
x
−
10
=
−
9
x
(
9
,
1
)
(
11
,
-1
)
(
10
,
0
)
(
11
,
0
)
(
10
,
1
)
Question
6
6.
Solve :
20
x
2
a
4
b
2
−
11
x
a
2
b
−
4
= 0
6
5
a
2
b
,
1
4
a
2
b
2
5
a
2
b
,
−
3
4
a
2
b
4
5
a
2
b
,
−
1
4
a
2
b
4
3
a
2
b
,
−
1
2
a
2
b
4
7
a
2
b
,
−
1
6
a
2
b
Question
7
7.
Solve :
21
x
2
a
−
12
x
−
7
x
a
+
4
= 0
2
7
a
,
0
4
7
a
,
2
6
6
7
a
,
2
3
4
9
a
,
1
4
4
5
a
,
1
2
Question
8
8.
Solve :
−
16
x
2
−
6
√
5
x
+
5
=
0
√
5
(
−
2
)
,
√
5
8
√
20
(
−
2
)
,
√
20
8
√
5
(
−
2
)
,
√
5
8
√
4
√
5
(
−
2
√
4
)
,
√
5
8
√
4
√
20
(
−
2
)
,
√
5
8
Question
9
9.
Solve :
10
x
2
−
5
x
+
6
x
b
−
3
b
= 0
1
4
,
−
3
b
7
3
2
,
−
b
5
1
2
,
−
3
b
5
−
1
2
,
−
b
1
,
−
b
Question
10
10.
The product of the roots of the quadratic equation
(
x
2
−
4
x
+
4
)
=
0
is
7
4
5
2
3
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