EduSahara™ Assignment
Name : Quadratic Equations1
Chapter : Quadratic Equations
Grade : CBSE Grade X
License : Non Commercial Use
Question
1
1.
Solve :
27
x
2
−
21
a
b
x
+
2
a
2
b
2
= 0
(i)
a
b
7
,
2
a
b
(ii)
−
a
b
9
,
0
(iii)
a
b
11
,
2
a
b
5
(iv)
a
b
9
,
2
a
b
3
(v)
a
b
3
,
4
a
b
3
Question
2
2.
Solve :
45
x
2
b
2
+
22
a
x
b
−
16
a
2
= 0
(i)
4
a
5
b
,
−
2
a
3
b
(ii)
2
a
5
b
,
−
8
a
9
b
(iii)
0
,
−
10
a
9
b
(iv)
2
a
3
b
,
−
8
a
7
b
(v)
2
a
7
b
,
−
8
a
11
b
Question
3
3.
Solve :
18
x
2
+
5
a
x
−
7
a
2
= 0
(i)
2
a
3
,
−
a
(ii)
3
a
4
,
−
5
a
9
(iii)
4
a
8
,
−
7
a
9
(iv)
a
4
,
−
a
(v)
2
a
5
,
−
7
a
11
Question
4
4.
Solve :
36
x
2
a
2
−
7
x
a
−
4
= 0
(i)
4
9
a
,
−
1
4
a
(ii)
2
9
a
,
−
1
2
a
(iii)
4
7
a
,
−
1
3
a
(iv)
2
3
a
,
0
(v)
4
11
a
,
−
1
5
a
Question
5
5.
Solve :
45
x
2
−
37
b
x
+
6
b
2
= 0
(i)
3
b
7
,
2
b
11
(ii)
b
5
,
0
(iii)
3
b
5
,
2
b
9
(iv)
b
,
2
b
7
(v)
b
,
4
b
9
Question
6
6.
Solve :
20
x
2
b
2
−
27
x
b
+
9
= 0
(i)
6
8
b
,
3
5
b
(ii)
1
b
,
1
b
(iii)
3
5
b
,
3
7
b
(iv)
1
2
b
,
1
5
b
Question
7
7.
Solve :
16
x
2
−
10
a
2
b
x
+
a
4
b
2
= 0
(i)
2
a
2
b
3
,
a
2
b
6
(ii)
3
a
2
b
4
,
3
a
2
b
8
(iii)
4
a
2
b
8
,
a
2
b
8
(iv)
a
2
b
4
,
−
a
2
b
8
(v)
2
a
2
b
5
,
a
2
b
10
Question
8
8.
Solve :
8
x
2
a
4
b
2
−
10
x
a
2
b
+
3
= 0
(i)
1
4
a
2
b
,
−
1
2
a
2
b
(ii)
1
2
a
2
b
,
1
4
a
2
b
(iii)
5
4
a
2
b
,
3
2
a
2
b
(iv)
3
2
a
2
b
,
1
a
2
b
(v)
3
4
a
2
b
,
1
2
a
2
b
Question
9
9.
Solve :
12
x
2
b
2
+
16
a
2
x
b
+
5
a
4
= 0
(i)
−
a
2
4
b
,
−
5
a
2
8
b
(ii)
−
3
a
2
2
b
,
−
7
a
2
6
b
(iii)
−
a
2
2
b
,
−
5
a
2
6
b
(iv)
−
a
2
b
,
−
5
a
2
4
b
(v)
a
2
2
b
,
−
a
2
2
b
Question
10
10.
Solve :
16
x
2
a
4
−
6
b
x
a
2
−
7
b
2
= 0
(i)
−
b
2
a
2
,
7
b
8
a
2
(ii)
−
b
a
2
,
5
b
8
a
2
(iii)
−
b
a
2
,
7
b
6
a
2
(iv)
−
b
3
a
2
,
7
b
10
a
2
(v)
0
,
9
b
8
a
2
Question
11
11.
Solve :
27
x
2
+
15
a
b
2
x
−
8
a
2
b
4
= 0
(i)
−
8
a
b
2
11
,
3
a
b
2
11
(ii)
−
8
a
b
2
9
,
3
a
b
2
9
(iii)
−
10
a
b
2
9
,
a
b
2
9
(iv)
−
2
a
b
2
3
,
5
a
b
2
9
(v)
−
8
a
b
2
7
,
3
a
b
2
7
Question
12
12.
Solve :
25
x
2
+
10
a
b
2
x
−
3
a
2
b
4
= 0
(i)
−
a
b
2
,
−
a
b
2
5
(ii)
−
3
a
b
2
7
,
a
b
2
7
(iii)
−
a
b
2
5
,
3
a
b
2
5
(iv)
−
3
a
b
2
5
,
a
b
2
5
(v)
−
a
b
2
,
a
b
2
3
Question
13
13.
Solve :
15
x
2
a
2
+
14
b
2
x
a
+
3
b
4
= 0
(i)
−
3
b
2
7
a
,
−
b
2
5
a
(ii)
−
3
b
2
5
a
,
−
b
2
3
a
(iii)
−
b
2
a
,
−
b
2
a
(iv)
−
b
2
5
a
,
b
2
3
a
Question
14
14.
Solve :
10
x
2
b
4
−
3
a
x
b
2
−
4
a
2
= 0
(i)
−
a
b
2
,
4
a
3
b
2
(ii)
−
a
4
b
2
,
4
a
7
b
2
(iii)
a
2
b
2
,
6
a
5
b
2
(iv)
−
a
2
b
2
,
4
a
5
b
2
(v)
−
3
a
2
b
2
,
2
a
5
b
2
Question
15
15.
Solve :
35
x
2
−
15
x
+
21
x
b
−
9
b
= 0
(i)
1
3
,
−
3
b
7
(ii)
3
5
,
−
b
(iii)
3
7
,
−
3
b
5
(iv)
1
7
,
−
b
(v)
5
7
,
−
b
5
Question
16
16.
Solve :
63
x
2
b
+
7
x
b
−
36
x
−
4
= 0
(i)
−
1
11
,
4
9
b
(ii)
−
1
7
,
4
5
b
(iii)
−
1
9
,
4
7
b
(iv)
−
1
3
,
2
7
b
(v)
1
9
,
6
7
b
Question
17
17.
Solve :
30
x
2
+
5
a
x
−
18
x
−
3
a
= 0
(i)
−
a
2
,
1
5
(ii)
a
6
,
1
(iii)
−
a
8
,
3
7
(iv)
−
a
4
,
1
(v)
−
a
6
,
3
5
Question
18
18.
Solve :
28
x
2
−
21
x
+
8
x
b
−
6
b
= 0
(i)
3
4
,
−
2
b
7
(ii)
5
4
,
0
(iii)
3
2
,
−
2
b
5
(iv)
1
2
,
−
2
b
9
(v)
1
4
,
−
4
b
7
Question
19
19.
Solve :
56
x
2
a
+
49
x
−
16
x
a
−
14
= 0
(i)
−
7
6
a
,
2
5
(ii)
−
9
8
a
,
0
(iii)
−
7
10
a
,
2
9
(iv)
−
7
8
a
,
2
7
(v)
−
5
8
a
,
4
7
Question
20
20.
Solve :
10
x
2
b
−
8
x
b
−
5
x
+
4
= 0
(i)
4
5
,
1
2
b
(ii)
4
3
,
1
b
(iii)
4
7
,
1
4
b
(iv)
2
5
,
−
1
2
b
(v)
6
5
,
3
2
b
Assignment Key
1) (iv)
2) (ii)
3) (iii)
4) (i)
5) (iii)
6) (i)
7) (iii)
8) (v)
9) (iii)
10) (i)
11) (ii)
12) (iv)
13) (ii)
14) (iv)
15) (iii)
16) (iii)
17) (v)
18) (i)
19) (iv)
20) (i)
