EduSahara™ Assignment
Name : Quadratic Equations1
Chapter : Quadratic Equations
Grade : ICSE Grade X
License : Non Commercial Use
Question
1
1.
Solve :
6
x
2
−
a
b
x
−
2
a
2
b
2
= 0
(i)
−
a
b
4
,
2
a
b
5
(ii)
a
b
2
,
4
a
b
3
(iii)
−
3
a
b
2
,
0
(iv)
−
a
b
,
2
a
b
(v)
−
a
b
2
,
2
a
b
3
Question
2
2.
Solve :
6
x
2
b
2
+
a
x
b
−
2
a
2
= 0
(i)
a
b
,
−
2
a
b
(ii)
3
a
2
b
,
0
(iii)
a
2
b
,
−
2
a
3
b
(iv)
−
a
2
b
,
−
4
a
3
b
(v)
a
4
b
,
−
2
a
5
b
Question
3
3.
Solve :
21
x
2
+
4
a
x
−
a
2
= 0
(i)
−
a
7
,
−
a
(ii)
3
a
7
,
a
3
(iii)
a
7
,
−
a
3
(iv)
a
5
,
−
a
(v)
a
9
,
−
a
5
Question
4
4.
Solve :
14
x
2
−
3
b
x
−
5
b
2
= 0
(i)
b
,
b
2
(ii)
b
,
−
b
(iii)
5
b
9
,
−
b
4
(iv)
5
b
7
,
−
b
2
(v)
3
b
7
,
−
3
b
2
Question
5
5.
Solve :
28
x
2
a
2
+
11
x
a
+
1
= 0
(i)
1
4
a
,
1
7
a
(ii)
−
1
6
a
,
−
1
9
a
(iii)
−
1
4
a
,
−
1
7
a
(iv)
−
3
4
a
,
−
3
7
a
(v)
−
1
2
a
,
−
1
5
a
Question
6
6.
Solve :
54
x
2
b
2
+
33
x
b
−
7
= 0
(i)
1
4
b
,
−
1
b
(ii)
−
1
6
b
,
−
1
b
(iii)
1
6
b
,
−
7
9
b
(iv)
1
8
b
,
−
7
11
b
(v)
1
2
b
,
−
5
9
b
Question
7
7.
Solve :
28
x
2
+
9
a
2
b
x
−
4
a
4
b
2
= 0
(i)
0
,
−
6
a
2
b
7
(ii)
a
2
b
5
,
−
4
a
2
b
9
(iii)
a
2
b
2
,
−
2
a
2
b
7
(iv)
2
a
2
b
8
,
−
4
a
2
b
7
(v)
a
2
b
3
,
−
4
a
2
b
5
Question
8
8.
Solve :
15
x
2
a
4
b
2
+
17
x
a
2
b
+
4
= 0
(i)
−
1
3
a
2
b
,
−
4
5
a
2
b
(ii)
−
1
a
2
b
,
−
6
5
a
2
b
(iii)
1
3
a
2
b
,
−
2
5
a
2
b
(iv)
−
1
a
2
b
,
−
4
3
a
2
b
(v)
−
1
5
a
2
b
,
−
4
7
a
2
b
Question
9
9.
Solve :
14
x
2
b
2
−
5
a
2
x
b
−
a
4
= 0
(i)
−
3
a
2
7
b
,
a
2
4
b
(ii)
a
2
7
b
,
3
a
2
4
b
(iii)
−
a
2
7
b
,
4
a
2
8
b
(iv)
−
a
2
5
b
,
2
a
2
3
b
(v)
−
a
2
9
b
,
2
a
2
5
b
Question
10
10.
Solve :
8
x
2
a
4
+
2
b
x
a
2
−
3
b
2
= 0
(i)
b
a
2
,
−
3
b
2
a
2
(ii)
2
b
4
a
2
,
−
3
b
4
a
2
(iii)
0
,
−
5
b
4
a
2
(iv)
b
a
2
,
−
b
4
a
2
(v)
b
3
a
2
,
−
b
2
a
2
Question
11
11.
Solve :
36
x
2
−
59
a
b
2
x
+
24
a
2
b
4
= 0
(i)
10
a
b
2
9
,
5
a
b
2
4
(ii)
2
a
b
2
3
,
a
b
2
4
(iii)
8
a
b
2
7
,
3
a
b
2
2
(iv)
8
a
b
2
9
,
3
a
b
2
4
(v)
8
a
b
2
11
,
a
b
2
2
Question
12
12.
Solve :
45
x
2
+
11
a
b
2
x
−
20
a
2
b
4
= 0
(i)
−
6
a
b
2
5
,
a
b
2
3
(ii)
−
4
a
b
2
7
,
5
a
b
2
11
(iii)
−
2
a
b
2
5
,
7
a
b
2
9
(iv)
−
4
a
b
2
3
,
5
a
b
2
7
(v)
−
4
a
b
2
5
,
5
a
b
2
9
Question
13
13.
Solve :
6
x
2
a
2
−
b
2
x
a
−
b
4
= 0
(i)
3
b
2
8
a
,
−
b
2
4
a
(ii)
3
b
2
4
a
,
−
b
2
2
a
(iii)
3
b
2
6
a
,
−
b
2
3
a
(iv)
b
2
6
a
,
−
2
b
2
3
a
(v)
5
b
2
6
a
,
0
Question
14
14.
Solve :
8
x
2
b
4
+
10
a
x
b
2
+
3
a
2
= 0
(i)
−
a
2
b
2
,
−
2
a
5
b
2
(ii)
−
5
a
4
b
2
,
−
3
a
4
b
2
(iii)
−
a
4
b
2
,
−
a
4
b
2
(iv)
−
3
a
4
b
2
,
−
a
2
b
2
(v)
−
3
a
2
b
2
,
−
2
a
3
b
2
Question
15
15.
Solve :
49
x
2
−
7
x
+
42
x
b
−
6
b
= 0
(i)
−
1
7
,
−
8
b
7
(ii)
1
7
,
−
6
b
7
(iii)
1
9
,
−
2
b
3
(iv)
1
5
,
−
6
b
5
(v)
3
7
,
−
4
b
7
Question
16
16.
Solve :
45
x
2
b
+
18
x
b
+
20
x
+
8
= 0
(i)
−
4
5
,
−
2
3
b
(ii)
−
2
7
,
−
4
11
b
(iii)
0
,
−
2
9
b
(iv)
−
2
5
,
−
4
9
b
(v)
−
2
3
,
−
4
7
b
Question
17
17.
Solve :
49
x
2
+
7
a
x
−
42
x
−
6
a
= 0
(i)
−
3
a
7
,
4
7
(ii)
−
a
5
,
6
5
(iii)
−
a
9
,
2
3
(iv)
−
a
7
,
6
7
(v)
a
7
,
8
7
Question
18
18.
Solve :
6
x
2
+
3
x
−
4
x
b
−
2
b
= 0
(i)
−
3
2
,
0
(ii)
−
1
,
2
b
(iii)
−
1
4
,
2
b
5
(iv)
−
1
2
,
2
b
3
(v)
1
2
,
4
b
3
Question
19
19.
Solve :
10
x
2
a
−
8
x
−
5
x
a
+
4
= 0
(i)
4
7
a
,
1
4
(ii)
6
5
a
,
3
2
(iii)
4
3
a
,
1
(iv)
2
5
a
,
−
1
2
(v)
4
5
a
,
1
2
Question
20
20.
Solve :
18
x
2
b
+
2
x
b
−
9
x
−
1
= 0
(i)
−
1
3
,
−
1
2
b
(ii)
−
1
11
,
1
4
b
(iii)
−
1
9
,
1
2
b
(iv)
−
1
7
,
1
b
(v)
1
9
,
3
2
b
Assignment Key
1) (v)
2) (iii)
3) (iii)
4) (iv)
5) (iii)
6) (iii)
7) (iv)
8) (i)
9) (iii)
10) (ii)
11) (iv)
12) (v)
13) (iii)
14) (iv)
15) (ii)
16) (iv)
17) (iv)
18) (iv)
19) (v)
20) (iii)
