EduSahara™ Assignment
Name : Solution of a Quadratic Equation Complex Problems
Chapter : Quadratic Equations
Grade : SSC Grade X
License : Non Commercial Use
Question
1
1.
Solve :
(
5
x
+
4
)
(
4
x
+
5
)
=
(
3
x
+
5
)
(
3
x
+
1
)
(i)
(
7
,
-1
)
(ii)
(
-7
,
1
)
(iii)
(
5
,
-3
)
(iv)
(
6
,
-2
)
(v)
(
10
,
2
)
Question
2
2.
Solve :
(
x
+
1
)
(
6
x
+
1
)
+
(
2
x
+
1
)
(
3
x
+
1
)
=
86
91
(i)
(
(
-18
61
)
,
-1
)
(ii)
(
(
-16
61
)
,
2
)
(iii)
(
(
-16
59
)
,
1
)
(iv)
(
(
-16
63
)
,
3
)
(v)
(
(
-14
61
)
,
4
)
Question
3
3.
Solve :
(
x
2
−
9
x
)
2
−
14
(
x
2
−
9
x
)
+
45
=
0
(i)
(
7
2
+
3
2
√
13
)
,
(
7
2
−
3
2
√
13
)
,
(
7
2
+
1
2
√
101
)
,
(
7
2
−
1
2
√
101
)
(ii)
(
9
2
+
3
2
√
13
)
,
(
9
2
−
3
2
√
13
)
,
(
9
2
+
1
2
√
101
)
,
(
9
2
−
1
2
√
101
)
(iii)
(
11
2
+
3
2
√
13
)
,
(
11
2
−
3
2
√
13
)
,
(
11
2
+
1
2
√
101
)
,
(
11
2
−
1
2
√
101
)
(iv)
(
9
2
+
3
2
4
√
13
)
,
(
9
2
−
3
2
4
√
13
)
,
(
9
2
+
1
2
4
√
101
)
,
(
9
2
−
1
2
4
√
101
)
(v)
(
9
2
+
39
2
)
,
(
9
2
−
39
2
)
,
(
9
2
+
101
2
)
,
(
9
2
−
101
2
)
Question
4
4.
Solve :
(
x
4
−
13
x
2
+
40
)
=
0
(i)
2
4
√
2
,
(
−
2
4
√
2
)
,
4
√
5
,
(
−
4
√
5
)
(ii)
2
√
-1
,
(
−
2
√
-1
)
,
√
3
,
(
−
√
3
)
(iii)
2
√
2
,
(
−
2
√
2
)
,
√
5
,
(
−
√
5
)
(iv)
2
√
4
,
(
−
2
√
4
)
,
√
8
,
(
−
√
7
)
(v)
4
,
(
−
4
)
,
5
,
(
−
5
)
Question
5
5.
Solve :
(
x
−
8
)
(
x
−
7
)
(
x
−
6
)
(
x
−
5
)
=
24
(i)
9
,
4
(ii)
10
,
5
(iii)
6
,
2
(iv)
11
,
7
(v)
8
,
3
Question
6
6.
Solve the quadratic equation
x
+
1
=
20
x
(i)
(
5
,
-5
)
(ii)
(
5
,
-6
)
(iii)
(
7
,
-6
)
(iv)
(
4
,
-5
)
(v)
(
7
,
-8
)
Question
7
7.
For what values of
k
are the roots of
(
k
+
18
)
x
2
+
(
k
+
6
)
x
+
(
k
−
14
)
=
0
equal
(i)
(
(
−
58
3
)
,
18
)
(ii)
(
(
−
96
5
)
,
18
)
(iii)
(
(
−
96
5
)
,
17
)
(iv)
(
(
−
56
3
)
,
15
)
(v)
(
(
−
56
3
)
,
17
)
Question
8
8.
Solve :
(
x
(
x
−
5
)
)
2
−
9
(
x
(
x
−
5
)
)
+
14
= 0
(i)
11
2
,
7
(ii)
37
6
,
13
(iii)
35
6
,
10
(iv)
45
8
,
11
(v)
25
4
,
9
Question
9
9.
Solve :
√
(
−
5
x
+
5
)
=
(
x
+
2
)
(i)
(
−
9
2
√
5
+
1
2
√
85
)
,
(
−
9
2
√
5
−
1
2
√
85
)
(ii)
(
−
9
2
+
1
2
√
170
)
,
(
−
9
2
−
1
2
√
170
)
(iii)
(
−
9
2
+
1
2
√
85
)
,
(
−
9
2
−
1
2
√
85
)
(iv)
(
−
9
2
√
4
+
1
2
√
85
)
,
(
−
9
2
√
4
−
1
2
√
85
)
(v)
(
−
9
2
+
1
2
√
255
)
,
(
−
9
2
−
1
2
√
255
)
Question
10
10.
Solve :
√
(
−
4
x
2
+
7
x
+
36
)
=
(
x
−
4
)
(i)
4
√
4
,
(
−
√
4
)
(ii)
4
√
2
,
(
−
√
2
)
(iii)
4
√
5
,
(
−
√
5
)
(iv)
4
√
3
,
(
−
√
3
)
(v)
4
,
(
−
1
)
Question
11
11.
Solve :
1
(
−
x
−
5
)
−
3
(
x
+
1
)
=
−
2
(i)
(
−
5
)
,
(
−
1
)
(ii)
(
−
5
√
2
)
,
(
−
√
2
)
(iii)
(
−
5
√
4
)
,
(
−
√
4
)
(iv)
(
−
5
√
5
)
,
(
−
√
5
)
(v)
(
−
5
√
3
)
,
(
−
√
3
)
Question
12
12.
Solve :
−
2
(
x
+
3
)
+
5
(
x
−
4
)
=
−
5
(
x
+
1
)
(i)
(
−
21
16
√
5
+
5
16
√
65
)
,
(
−
21
16
√
5
−
5
16
√
65
)
(ii)
(
−
21
16
√
4
+
5
16
√
65
)
,
(
−
21
16
√
4
−
5
16
√
65
)
(iii)
(
−
21
16
+
5
16
√
195
)
,
(
−
21
16
−
5
16
√
195
)
(iv)
(
−
21
16
+
5
16
√
130
)
,
(
−
21
16
−
5
16
√
130
)
(v)
(
−
21
16
+
5
16
√
65
)
,
(
−
21
16
−
5
16
√
65
)
Question
13
13.
Solve :
3
√
3
x
2
−
24
x
+
7
√
3
=
0
(i)
√
12
3
,
7
√
3
(ii)
√
3
3
√
4
,
7
√
12
(iii)
√
3
3
,
7
√
3
(iv)
√
12
3
,
7
√
4
√
3
(v)
√
3
3
,
7
√
12
Assignment Key
1) (i)
2) (ii)
3) (ii)
4) (iii)
5) (i)
6) (iv)
7) (i)
8) (iii)
9) (iii)
10) (v)
11) (i)
12) (v)
13) (iii)