EduSahara™ Assignment
Name : Quadratic Equations1
Chapter : Quadratic Equations
Grade : ICSE Grade X
License : Non Commercial Use
Question
1
1.
Solve :
12
x
2
+
7
a
b
x
+
a
2
b
2
= 0
(i)
a
b
4
,
0
(ii)
−
3
a
b
4
,
−
2
a
b
3
(iii)
−
a
b
4
,
−
a
b
3
(iv)
−
a
b
2
,
−
a
b
2
(v)
−
a
b
6
,
−
a
b
4
Question
2
2.
Solve :
72
x
2
b
2
+
109
a
x
b
+
40
a
2
= 0
(i)
−
8
a
11
b
,
−
a
2
b
(ii)
−
8
a
7
b
,
−
5
a
6
b
(iii)
−
8
a
9
b
,
−
5
a
8
b
(iv)
−
2
a
3
b
,
−
3
a
8
b
(v)
−
10
a
9
b
,
−
7
a
8
b
Question
3
3.
Solve :
6
x
2
+
a
x
−
2
a
2
= 0
(i)
0
,
a
(ii)
−
2
a
3
,
2
a
4
(iii)
−
2
a
,
a
(iv)
−
4
a
3
,
0
(v)
−
2
a
5
,
a
3
Question
4
4.
Solve :
27
x
2
−
12
b
x
−
4
b
2
= 0
(i)
4
b
9
,
−
4
b
9
(ii)
8
b
9
,
0
(iii)
6
b
9
,
−
2
b
9
(iv)
6
b
7
,
−
2
b
7
(v)
6
b
11
,
−
2
b
11
Question
5
5.
Solve :
12
x
2
a
2
−
17
x
a
+
6
= 0
(i)
3
4
a
,
6
9
a
(ii)
1
2
a
,
6
11
a
(iii)
5
4
a
,
8
9
a
(iv)
3
2
a
,
6
7
a
(v)
1
4
a
,
4
9
a
Question
6
6.
Solve :
32
x
2
b
2
+
44
x
b
+
15
= 0
(i)
−
7
8
b
,
−
5
4
b
(ii)
−
1
2
b
,
−
1
2
b
(iii)
−
5
8
b
,
−
3
4
b
(iv)
−
3
8
b
,
−
1
4
b
(v)
−
5
6
b
,
−
3
2
b
Question
7
7.
Solve :
21
x
2
+
11
a
2
b
x
−
2
a
4
b
2
= 0
(i)
0
,
3
a
2
b
7
(ii)
−
2
a
2
b
5
,
a
2
b
9
(iii)
−
4
a
2
b
3
,
−
a
2
b
7
(iv)
−
2
a
2
b
3
,
a
2
b
7
(v)
−
2
a
2
b
,
a
2
b
5
Question
8
8.
Solve :
14
x
2
a
4
b
2
−
x
a
2
b
−
3
= 0
(i)
1
2
a
2
b
,
−
3
7
a
2
b
(ii)
−
1
2
a
2
b
,
−
5
7
a
2
b
(iii)
1
a
2
b
,
−
3
5
a
2
b
(iv)
3
2
a
2
b
,
−
1
7
a
2
b
(v)
1
4
a
2
b
,
−
1
3
a
2
b
Question
9
9.
Solve :
35
x
2
b
2
+
44
a
2
x
b
+
12
a
4
= 0
(i)
0
,
−
4
a
2
7
b
(ii)
−
2
a
2
5
b
,
−
6
a
2
7
b
(iii)
−
4
a
2
5
b
,
−
8
a
2
7
b
(iv)
−
2
a
2
3
b
,
−
6
a
2
5
b
(v)
−
2
a
2
7
b
,
−
2
a
2
3
b
Question
10
10.
Solve :
15
x
2
a
4
−
b
x
a
2
−
6
b
2
= 0
(i)
2
b
5
a
2
,
−
3
b
7
a
2
(ii)
4
b
3
a
2
,
−
b
5
a
2
(iii)
2
b
a
2
,
−
b
a
2
(iv)
2
b
3
a
2
,
−
3
b
5
a
2
(v)
0
,
−
b
a
2
Question
11
11.
Solve :
48
x
2
−
2
a
b
2
x
−
35
a
2
b
4
= 0
(i)
−
a
b
2
2
,
9
a
b
2
8
(ii)
−
5
a
b
2
4
,
7
a
b
2
6
(iii)
−
7
a
b
2
6
,
5
a
b
2
8
(iv)
−
5
a
b
2
6
,
7
a
b
2
8
(v)
−
5
a
b
2
8
,
7
a
b
2
10
Question
12
12.
Solve :
12
x
2
+
5
a
b
2
x
−
2
a
2
b
4
= 0
(i)
−
2
a
b
2
,
a
b
2
2
(ii)
−
4
a
b
2
3
,
−
a
b
2
4
(iii)
−
2
a
b
2
3
,
a
b
2
4
(iv)
−
2
a
b
2
5
,
a
b
2
6
(v)
0
,
3
a
b
2
4
Question
13
13.
Solve :
14
x
2
a
2
−
5
b
2
x
a
−
b
4
= 0
(i)
3
b
2
2
a
,
b
2
7
a
(ii)
b
2
4
a
,
−
b
2
9
a
(iii)
b
2
2
a
,
−
b
2
7
a
(iv)
b
2
a
,
−
b
2
5
a
(v)
−
b
2
2
a
,
−
3
b
2
7
a
Question
14
14.
Solve :
14
x
2
b
4
+
9
a
x
b
2
+
a
2
= 0
(i)
−
a
b
2
,
−
3
a
7
b
2
(ii)
−
a
b
2
,
−
a
5
b
2
(iii)
−
a
2
b
2
,
−
a
7
b
2
(iv)
−
a
3
b
2
,
−
a
9
b
2
(v)
0
,
a
7
b
2
Question
15
15.
Solve :
12
x
2
+
9
x
−
4
x
b
−
3
b
= 0
(i)
−
1
4
,
5
b
9
(ii)
−
5
4
,
b
9
(iii)
−
3
4
,
3
b
9
(iv)
−
1
2
,
3
b
11
(v)
−
3
2
,
3
b
7
Question
16
16.
Solve :
14
x
2
b
+
7
x
b
+
6
x
+
3
= 0
(i)
−
1
4
,
−
1
3
b
(ii)
−
3
2
,
−
5
7
b
(iii)
−
1
,
−
3
5
b
(iv)
−
1
2
,
−
3
7
b
(v)
1
2
,
−
1
7
b
Question
17
17.
Solve :
48
x
2
−
30
a
x
−
40
x
+
25
a
= 0
(i)
7
a
8
,
7
6
(ii)
3
a
8
,
1
2
(iii)
5
a
8
,
5
6
(iv)
5
a
6
,
5
4
(v)
a
2
,
5
8
Question
18
18.
Solve :
24
x
2
−
4
x
−
6
x
b
+
b
= 0
(i)
1
4
,
b
2
(ii)
−
1
6
,
−
b
4
(iii)
1
6
,
b
4
(iv)
1
2
,
3
b
4
(v)
1
8
,
b
6
Question
19
19.
Solve :
63
x
2
a
−
14
x
−
9
x
a
+
2
= 0
(i)
2
7
a
,
1
5
(ii)
2
9
a
,
1
7
(iii)
4
9
a
,
3
7
(iv)
0
,
−
1
7
(v)
2
11
a
,
1
9
Question
20
20.
Solve :
4
x
2
b
−
2
x
b
−
2
x
+
1
= 0
(i)
1
2
,
2
4
b
(ii)
3
2
,
1
b
(iii)
1
,
1
b
(iv)
−
1
2
,
0
(v)
1
4
,
1
3
b
Assignment Key
1) (iii)
2) (iii)
3) (ii)
4) (iii)
5) (i)
6) (iii)
7) (iv)
8) (i)
9) (ii)
10) (iv)
11) (iv)
12) (iii)
13) (iii)
14) (iii)
15) (iii)
16) (iv)
17) (iii)
18) (iii)
19) (ii)
20) (i)
