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 :
(
x
−
7
)
(
2
x
+
7
)
=
(
x
−
3
)
(
4
x
+
3
)
(i)
(
12
,
-1
)
(ii)
(
13
,
0
)
(iii)
(
10
,
-3
)
(iv)
(
15
,
2
)
(v)
(
-13
,
0
)
Question
2
2.
Solve :
(
2
x
+
1
)
(
6
x
+
1
)
+
(
5
x
+
1
)
(
3
x
+
1
)
=
178
91
(i)
(
3
,
1
38
)
(ii)
(
1
,
1
34
)
(iii)
(
2
,
1
36
)
(iv)
(
5
,
1
12
)
(v)
(
0
,
(
-1
36
)
)
Question
3
3.
Solve :
(
x
2
−
3
x
)
2
−
10
(
x
2
−
3
x
)
+
16
=
0
(i)
(
5
2
+
1
2
√
41
)
,
(
5
2
−
1
2
√
41
)
,
(
5
2
+
1
2
√
17
)
,
(
5
2
−
1
2
√
17
)
(ii)
(
1
2
+
1
2
√
41
)
,
(
1
2
−
1
2
√
41
)
,
(
1
2
+
1
2
√
17
)
,
(
1
2
−
1
2
√
17
)
(iii)
(
3
2
+
1
2
4
√
41
)
,
(
3
2
−
1
2
4
√
41
)
,
(
3
2
+
1
2
4
√
17
)
,
(
3
2
−
1
2
4
√
17
)
(iv)
(
3
2
+
41
2
)
,
(
3
2
−
41
2
)
,
(
3
2
+
17
2
)
,
(
3
2
−
17
2
)
(v)
(
3
2
+
1
2
√
41
)
,
(
3
2
−
1
2
√
41
)
,
(
3
2
+
1
2
√
17
)
,
(
3
2
−
1
2
√
17
)
Question
4
4.
Solve :
(
x
4
−
9
x
2
+
8
)
=
0
(i)
2
√
1
2
,
(
−
2
√
-1
)
,
(
−
1
)
,
(
−
3
)
(ii)
4
,
(
−
4
)
,
0
,
(
−
2
)
(iii)
2
4
√
2
,
(
−
2
4
√
2
)
,
2
,
0
(iv)
2
√
5
,
(
−
2
√
4
)
,
3
,
1
(v)
2
√
2
,
(
−
2
√
2
)
,
1
,
(
−
1
)
Question
5
5.
Solve :
(
x
−
7
)
(
x
−
6
)
(
x
−
5
)
(
x
−
4
)
=
17160
(i)
14
,
(
−
8
)
(ii)
19
,
(
−
3
)
(iii)
18
,
(
−
5
)
(iv)
17
,
(
−
6
)
(v)
16
,
(
−
7
)
Question
6
6.
Solve the quadratic equation
x
+
10
=
−
16
x
(i)
(
-1
,
-8
)
(ii)
(
0
,
-10
)
(iii)
(
-1
,
-9
)
(iv)
(
0
,
-9
)
(v)
(
-2
,
-8
)
Question
7
7.
For what values of
k
are the roots of
(
k
−
5
)
x
2
+
(
k
+
2
)
x
+
(
k
−
38
)
=
0
equal
(i)
(
14
3
,
54
)
(ii)
(
22
5
,
54
)
(iii)
(
16
3
,
51
)
(iv)
(
22
5
,
53
)
(v)
(
16
3
,
53
)
Question
8
8.
Solve :
(
x
(
x
+
5
)
)
2
+
7
(
x
(
x
+
5
)
)
+
10
= 0
(i)
-4
,
(
-17
4
)
(ii)
(
-10
3
)
,
(
-25
6
)
(iii)
-4
,
(
-9
2
)
(iv)
(
-8
3
)
,
(
-23
6
)
(v)
(
-16
5
)
,
(
-33
8
)
Question
9
9.
Solve :
√
(
5
x
+
2
)
=
(
x
−
8
)
(i)
(
21
2
+
1
2
√
386
)
,
(
21
2
−
1
2
√
386
)
(ii)
(
21
2
+
1
2
√
193
)
,
(
21
2
−
1
2
√
193
)
(iii)
(
21
2
+
1
2
√
579
)
,
(
21
2
−
1
2
√
579
)
(iv)
(
21
2
√
5
+
1
2
√
193
)
,
(
21
2
√
5
−
1
2
√
193
)
(v)
(
21
2
√
4
+
1
2
√
193
)
,
(
21
2
√
4
−
1
2
√
193
)
Question
10
10.
Solve :
√
(
4
x
2
+
12
x
+
8
)
=
(
x
−
6
)
(i)
(
−
4
−
2
3
√
114
)
,
(
−
4
+
2
3
√
114
)
(ii)
(
−
4
−
2
3
√
171
)
,
(
−
4
+
2
3
√
171
)
(iii)
(
−
4
√
4
−
2
3
√
57
)
,
(
−
4
√
4
+
2
3
√
57
)
(iv)
(
−
4
−
2
3
√
57
)
,
(
−
4
+
2
3
√
57
)
(v)
(
−
4
√
5
−
2
3
√
57
)
,
(
−
4
√
5
+
2
3
√
57
)
Question
11
11.
Solve :
−
3
(
x
−
1
)
−
4
(
x
−
5
)
=
−
2
(i)
5
√
2
,
√
2
(ii)
5
,
1
(iii)
5
√
4
,
√
4
(iv)
5
√
5
,
√
5
(v)
5
√
3
,
√
3
Question
12
12.
Solve :
−
5
(
−
x
+
1
)
−
1
(
−
x
−
3
)
=
5
(
x
+
3
)
(i)
(
−
3
√
2
)
,
(
−
19
√
2
)
(ii)
(
−
3
)
,
(
−
19
)
(iii)
(
−
3
√
4
)
,
(
−
19
√
4
)
(iv)
(
−
3
√
3
)
,
(
−
19
√
3
)
(v)
(
−
3
√
5
)
,
(
−
19
√
5
)
Question
13
13.
Solve :
−
8
√
3
x
2
−
20
x
−
4
√
3
=
0
(i)
√
12
(
−
4
)
,
(
−
2
)
√
48
(ii)
√
12
(
−
4
√
4
)
,
(
−
2
)
√
48
(iii)
√
48
(
−
4
)
,
(
−
2
)
√
12
(iv)
√
12
(
−
4
)
,
(
−
2
)
√
12
(v)
√
48
(
−
4
)
,
(
−
2
√
4
)
√
12
Assignment Key
1) (ii)
2) (iii)
3) (v)
4) (v)
5) (iv)
6) (v)
7) (i)
8) (ii)
9) (ii)
10) (iv)
11) (ii)
12) (ii)
13) (iv)