EduSahara™ Assignment
Name : Quadratic Equations1
Chapter : Quadratic Equations
Grade : CBSE Grade X
License : Non Commercial Use
Question
1
1.
Solve :
45
x
2
−
31
a
b
x
−
8
a
2
b
2
= 0
(i)
−
a
b
3
,
8
a
b
7
(ii)
−
a
b
5
,
8
a
b
9
(iii)
−
a
b
7
,
8
a
b
11
(iv)
a
b
5
,
10
a
b
9
(v)
−
3
a
b
5
,
2
a
b
3
Question
2
2.
Solve :
18
x
2
b
2
−
7
a
x
b
−
a
2
= 0
(i)
−
a
3
b
,
−
a
2
b
(ii)
−
a
11
b
,
a
4
b
(iii)
−
a
7
b
,
a
b
(iv)
a
9
b
,
3
a
2
b
(v)
−
a
9
b
,
a
2
b
Question
3
3.
Solve :
6
x
2
−
a
x
−
2
a
2
= 0
(i)
a
2
,
4
a
3
(ii)
−
a
4
,
2
a
5
(iii)
−
a
,
2
a
(iv)
−
a
2
,
2
a
3
(v)
−
3
a
2
,
0
Question
4
4.
Solve :
6
x
2
a
2
−
7
x
a
+
2
= 0
(i)
1
a
,
2
3
a
(ii)
1
3
a
,
1
4
a
(iii)
4
6
a
,
4
8
a
(iv)
1
2
a
,
2
5
a
(v)
1
a
,
3
4
a
Question
5
5.
Solve :
27
x
2
+
3
b
x
−
10
b
2
= 0
(i)
7
b
9
,
−
b
3
(ii)
5
b
9
,
−
2
b
3
(iii)
5
b
11
,
−
b
2
(iv)
b
3
,
−
b
(v)
5
b
7
,
−
b
Question
6
6.
Solve :
18
x
2
b
2
+
5
x
b
−
2
= 0
(i)
−
1
b
,
2
7
b
(ii)
−
1
4
b
,
2
11
b
(iii)
−
3
2
b
,
0
(iv)
1
2
b
,
4
9
b
(v)
−
1
2
b
,
2
9
b
Question
7
7.
Solve :
25
x
2
+
30
a
2
b
x
+
9
a
4
b
2
= 0
(i)
−
a
2
b
5
,
−
a
2
b
5
(ii)
−
3
a
2
b
5
,
−
3
a
2
b
5
(iii)
−
a
2
b
,
−
a
2
b
(iv)
−
3
a
2
b
7
,
−
3
a
2
b
7
Question
8
8.
Solve :
35
x
2
a
4
b
2
+
18
x
a
2
b
−
5
= 0
(i)
1
7
a
2
b
,
−
5
9
a
2
b
(ii)
3
5
a
2
b
,
−
3
7
a
2
b
(iii)
−
1
5
a
2
b
,
−
1
a
2
b
(iv)
1
3
a
2
b
,
−
1
a
2
b
(v)
1
5
a
2
b
,
−
5
7
a
2
b
Question
9
9.
Solve :
21
x
2
b
2
−
a
2
x
b
−
2
a
4
= 0
(i)
−
a
2
3
b
,
−
4
a
2
7
b
(ii)
a
2
b
,
0
(iii)
a
2
b
,
−
2
a
2
5
b
(iv)
a
2
5
b
,
−
2
a
2
9
b
(v)
a
2
3
b
,
−
2
a
2
7
b
Question
10
10.
Solve :
40
x
2
a
4
−
31
b
x
a
2
+
6
b
2
= 0
(i)
2
b
7
a
2
,
3
b
10
a
2
(ii)
2
b
5
a
2
,
3
b
8
a
2
(iii)
4
b
5
a
2
,
5
b
8
a
2
(iv)
0
,
b
8
a
2
(v)
2
b
3
a
2
,
b
2
a
2
Question
11
11.
Solve :
4
x
2
−
4
a
b
2
x
+
a
2
b
4
= 0
(i)
a
b
2
,
a
b
2
(ii)
3
a
b
2
2
,
3
a
b
2
2
(iii)
−
a
b
2
2
,
−
a
b
2
2
(iv)
a
b
2
2
,
a
b
2
2
(v)
a
b
2
4
,
a
b
2
4
Question
12
12.
Solve :
15
x
2
+
2
a
b
2
x
−
8
a
2
b
4
= 0
(i)
6
a
b
2
7
,
−
4
a
b
2
3
(ii)
6
a
b
2
9
,
−
4
a
b
2
5
(iii)
8
a
b
2
9
,
−
2
a
b
2
5
(iv)
6
a
b
2
11
,
−
4
a
b
2
7
(v)
4
a
b
2
9
,
−
6
a
b
2
5
Question
13
13.
Solve :
36
x
2
a
2
+
47
b
2
x
a
+
15
b
4
= 0
(i)
−
b
2
4
a
,
−
b
2
3
a
(ii)
−
b
2
2
a
,
−
5
b
2
11
a
(iii)
−
3
b
2
2
a
,
−
5
b
2
7
a
(iv)
−
3
b
2
4
a
,
−
5
b
2
9
a
(v)
−
5
b
2
4
a
,
−
7
b
2
9
a
Question
14
14.
Solve :
21
x
2
b
4
+
19
a
x
b
2
+
4
a
2
= 0
(i)
−
4
a
9
b
2
,
−
a
4
b
2
(ii)
−
2
a
7
b
2
,
0
(iii)
−
4
a
5
b
2
,
−
a
2
b
2
(iv)
−
6
a
7
b
2
,
−
2
a
3
b
2
(v)
−
4
a
7
b
2
,
−
a
3
b
2
Question
15
15.
Solve :
20
x
2
+
15
x
−
8
x
b
−
6
b
= 0
(i)
−
1
,
2
b
3
(ii)
−
1
2
,
4
b
5
(iii)
−
1
,
0
(iv)
−
3
5
,
2
b
7
(v)
−
3
4
,
2
b
5
Question
16
16.
Solve :
45
x
2
b
−
10
x
b
+
36
x
−
8
= 0
(i)
4
9
,
−
2
5
b
(ii)
2
7
,
−
4
3
b
(iii)
2
9
,
−
4
5
b
(iv)
0
,
−
6
5
b
(v)
2
11
,
−
4
7
b
Question
17
17.
Solve :
42
x
2
−
7
a
x
+
36
x
−
6
a
= 0
(i)
−
a
6
,
−
8
7
(ii)
a
8
,
−
2
3
(iii)
a
2
,
−
4
7
(iv)
a
6
,
−
6
7
(v)
a
4
,
−
6
5
Question
18
18.
Solve :
16
x
2
−
4
x
−
12
x
b
+
3
b
= 0
(i)
1
2
,
3
b
2
(ii)
−
1
4
,
b
4
(iii)
1
6
,
b
2
(iv)
3
4
,
5
b
4
(v)
1
4
,
3
b
4
Question
19
19.
Solve :
21
x
2
a
−
6
x
+
14
x
a
−
4
= 0
(i)
2
5
a
,
−
2
(ii)
2
9
a
,
−
2
5
(iii)
2
7
a
,
−
2
3
(iv)
4
7
a
,
0
(v)
0
,
−
4
3
Question
20
20.
Solve :
24
x
2
b
+
21
x
b
−
16
x
−
14
= 0
(i)
−
5
8
,
4
3
b
(ii)
−
7
6
,
2
b
(iii)
−
7
8
,
2
3
b
(iv)
−
9
8
,
0
(v)
−
7
10
,
2
5
b
Assignment Key
1) (ii)
2) (v)
3) (iv)
4) (iii)
5) (ii)
6) (v)
7) (ii)
8) (v)
9) (v)
10) (ii)
11) (iv)
12) (ii)
13) (iv)
14) (v)
15) (v)
16) (iii)
17) (iv)
18) (v)
19) (iii)
20) (iii)
