EduSahara™ Assignment
Name : Quadratic Equations1
Chapter : Quadratic Equations
Grade : ICSE Grade X
License : Non Commercial Use
Question
1
1.
Solve :
24
x
2
−
a
b
x
−
10
a
2
b
2
= 0
(i)
−
a
b
2
,
a
b
2
(ii)
−
5
a
b
8
,
4
a
b
6
(iii)
−
5
a
b
6
,
a
b
(iv)
−
7
a
b
8
,
a
b
3
(v)
−
3
a
b
8
,
a
b
Question
2
2.
Solve :
15
x
2
b
2
+
a
x
b
−
6
a
2
= 0
(i)
a
b
,
−
4
a
9
b
(ii)
3
a
5
b
,
−
2
a
3
b
(iii)
a
b
,
−
6
a
7
b
(iv)
3
a
7
b
,
−
6
a
11
b
(v)
a
5
b
,
−
8
a
9
b
Question
3
3.
Solve :
4
x
2
−
a
2
= 0
(i)
a
2
,
5
a
6
(ii)
−
3
a
2
,
a
6
(iii)
−
a
,
3
a
4
(iv)
−
a
4
,
3
a
8
(v)
−
a
2
,
3
a
6
Question
4
4.
Solve :
21
x
2
+
2
b
x
−
8
b
2
= 0
(i)
−
6
b
7
,
4
b
5
(ii)
−
4
b
9
,
6
b
7
(iii)
−
6
b
11
,
4
b
9
(iv)
−
2
b
3
,
4
b
7
(v)
−
8
b
9
,
2
b
7
Question
5
5.
Solve :
72
x
2
a
2
−
35
x
a
+
3
= 0
(i)
5
8
a
,
1
3
a
(ii)
1
2
a
,
1
7
a
(iii)
3
8
a
,
1
9
a
(iv)
1
8
a
,
−
1
9
a
(v)
3
10
a
,
1
11
a
Question
6
6.
Solve :
9
x
2
b
2
−
3
x
b
−
2
= 0
(i)
1
3
b
,
4
3
b
(ii)
−
1
b
,
0
(iii)
−
1
b
,
2
b
(iv)
−
1
5
b
,
2
5
b
(v)
−
1
3
b
,
2
3
b
Question
7
7.
Solve :
16
x
2
+
22
a
2
b
x
+
7
a
4
b
2
= 0
(i)
a
2
b
2
,
−
5
a
2
b
8
(ii)
−
a
2
b
,
−
7
a
2
b
6
(iii)
−
3
a
2
b
2
,
−
9
a
2
b
8
(iv)
−
a
2
b
4
,
−
7
a
2
b
10
(v)
−
a
2
b
2
,
−
7
a
2
b
8
Question
8
8.
Solve :
15
x
2
a
4
b
2
+
4
x
a
2
b
−
4
= 0
(i)
0
,
4
5
a
2
b
(ii)
−
4
3
a
2
b
,
0
(iii)
−
2
5
a
2
b
,
2
7
a
2
b
(iv)
−
2
a
2
b
,
2
3
a
2
b
(v)
−
2
3
a
2
b
,
2
5
a
2
b
Question
9
9.
Solve :
8
x
2
b
2
−
2
a
2
x
b
−
a
4
= 0
(i)
−
a
2
4
b
,
a
2
2
b
(ii)
−
a
2
3
b
,
a
2
b
(iii)
−
a
2
2
b
,
−
a
2
2
b
(iv)
0
,
3
a
2
2
b
(v)
−
a
2
5
b
,
a
2
4
b
Question
10
10.
Solve :
28
x
2
a
4
−
37
b
x
a
2
+
12
b
2
= 0
(i)
2
b
7
a
2
,
b
4
a
2
(ii)
4
b
7
a
2
,
3
b
4
a
2
(iii)
4
b
5
a
2
,
3
b
2
a
2
(iv)
4
b
9
a
2
,
b
2
a
2
(v)
6
b
7
a
2
,
5
b
4
a
2
Question
11
11.
Solve :
20
x
2
−
19
a
b
2
x
+
3
a
2
b
4
= 0
(i)
3
a
b
2
4
,
a
b
2
5
(ii)
5
a
b
2
4
,
3
a
b
2
5
(iii)
3
a
b
2
2
,
a
b
2
3
(iv)
a
b
2
4
,
−
a
b
2
5
(v)
a
b
2
2
,
a
b
2
7
Question
12
12.
Solve :
12
x
2
−
a
b
2
x
−
6
a
2
b
4
= 0
(i)
a
b
2
4
,
−
4
a
b
2
3
(ii)
3
a
b
2
4
,
−
2
a
b
2
3
(iii)
3
a
b
2
2
,
−
2
a
b
2
(iv)
5
a
b
2
4
,
0
(v)
a
b
2
2
,
−
2
a
b
2
5
Question
13
13.
Solve :
36
x
2
a
2
+
17
b
2
x
a
+
2
b
4
= 0
(i)
−
2
b
2
9
a
,
−
b
2
4
a
(ii)
−
2
b
2
7
a
,
−
b
2
2
a
(iii)
−
2
b
2
11
a
,
−
b
2
6
a
(iv)
0
,
b
2
4
a
(v)
−
4
b
2
9
a
,
−
3
b
2
4
a
Question
14
14.
Solve :
35
x
2
b
4
−
32
a
x
b
2
+
5
a
2
= 0
(i)
5
a
9
b
2
,
a
7
b
2
(ii)
a
b
2
,
a
3
b
2
(iii)
5
a
7
b
2
,
a
5
b
2
(iv)
a
b
2
,
3
a
5
b
2
(v)
3
a
7
b
2
,
−
a
5
b
2
Question
15
15.
Solve :
6
x
2
−
3
x
+
2
x
b
−
b
= 0
(i)
1
,
−
b
(ii)
2
4
,
−
b
3
(iii)
1
,
b
3
(iv)
0
,
−
b
(v)
1
3
,
−
b
5
Question
16
16.
Solve :
6
x
2
b
+
3
x
b
−
4
x
−
2
= 0
(i)
−
2
3
,
2
b
(ii)
−
3
4
,
0
(iii)
−
1
2
,
2
3
b
(iv)
−
2
5
,
2
5
b
(v)
−
1
4
,
4
3
b
Question
17
17.
Solve :
24
x
2
+
3
a
x
+
16
x
+
2
a
= 0
(i)
−
a
10
,
−
2
5
(ii)
−
3
a
8
,
−
4
3
(iii)
−
a
6
,
−
2
(iv)
−
a
8
,
−
2
3
(v)
a
8
,
0
Question
18
18.
Solve :
8
x
2
−
4
x
+
6
x
b
−
3
b
= 0
(i)
1
2
,
−
3
b
4
(ii)
1
,
−
b
(iii)
−
1
2
,
−
b
(iv)
3
2
,
−
b
2
(v)
1
4
,
−
3
b
5
Question
19
19.
Solve :
24
x
2
a
+
6
x
−
20
x
a
−
5
= 0
(i)
−
1
4
a
,
5
6
(ii)
1
4
a
,
7
6
(iii)
−
1
2
a
,
5
4
(iv)
−
3
4
a
,
1
2
(v)
−
1
6
a
,
5
8
Question
20
20.
Solve :
72
x
2
b
−
27
x
b
−
56
x
+
21
= 0
(i)
1
8
,
5
9
b
(ii)
1
2
,
1
b
(iii)
3
8
,
7
9
b
(iv)
3
10
,
7
11
b
(v)
5
8
,
1
b
Assignment Key
1) (ii)
2) (ii)
3) (v)
4) (iv)
5) (iii)
6) (v)
7) (v)
8) (v)
9) (i)
10) (ii)
11) (i)
12) (ii)
13) (i)
14) (iii)
15) (ii)
16) (iii)
17) (iv)
18) (i)
19) (i)
20) (iii)
