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 :
(
19
x
+
1
)
(
7
x
+
1
)
=
(
45
x
+
1
)
(
17
x
+
1
)
(i)
(
2
,
0
)
(ii)
(
0
,
-2
)
(iii)
(
5
,
2
)
(iv)
(
-2
,
0
)
(v)
(
1
,
-1
)
Question
2
2.
Solve :
(
2
x
+
3
)
(
x
−
3
)
+
(
x
−
2
)
(
2
x
+
1
)
=
149
22
(i)
(
(
-127
188
)
,
7
)
(ii)
(
(
-43
62
)
,
4
)
(iii)
(
(
-129
190
)
,
6
)
(iv)
(
(
-129
188
)
,
5
)
(v)
(
(
-131
188
)
,
2
)
Question
3
3.
Solve :
(
x
2
−
5
x
)
2
−
7
(
x
2
−
5
x
)
+
12
=
0
(i)
(
5
2
+
1
2
√
41
)
,
(
5
2
−
1
2
√
41
)
,
(
5
2
+
1
2
√
37
)
,
(
5
2
−
1
2
√
37
)
(ii)
(
5
2
+
41
2
)
,
(
5
2
−
41
2
)
,
(
5
2
+
37
2
)
,
(
5
2
−
37
2
)
(iii)
(
7
2
+
1
2
√
41
)
,
(
7
2
−
1
2
√
41
)
,
(
7
2
+
1
2
√
37
)
,
(
7
2
−
1
2
√
37
)
(iv)
(
5
2
+
1
2
4
√
41
)
,
(
5
2
−
1
2
4
√
41
)
,
(
5
2
+
1
2
4
√
37
)
,
(
5
2
−
1
2
4
√
37
)
(v)
(
3
2
+
1
2
√
41
)
,
(
3
2
−
1
2
√
41
)
,
(
3
2
+
1
2
√
37
)
,
(
3
2
−
1
2
√
37
)
Question
4
4.
Solve :
(
x
4
−
8
x
2
+
7
)
=
0
(i)
4
√
7
,
(
−
4
√
7
)
,
2
,
0
(ii)
√
7
,
(
−
√
7
)
,
1
,
(
−
1
)
(iii)
√
10
,
(
−
√
9
)
,
4
,
2
(iv)
7
,
(
−
7
)
,
0
,
(
−
2
)
(v)
√
5
,
(
−
√
4
)
,
(
−
2
)
,
(
−
4
)
Question
5
5.
Solve :
(
x
−
2
)
(
x
−
1
)
x
(
x
+
1
)
=
3024
(i)
7
,
(
−
8
)
(ii)
8
,
(
−
7
)
(iii)
6
,
(
−
10
)
(iv)
9
,
(
−
6
)
(v)
11
,
(
−
4
)
Question
6
6.
Solve the quadratic equation
x
+
2
=
8
x
(i)
(
3
,
-5
)
(ii)
(
3
,
-4
)
(iii)
(
2
,
-4
)
(iv)
(
4
,
-7
)
(v)
(
4
,
-5
)
Question
7
7.
For what values of
k
are the roots of
(
k
−
41
)
x
2
+
(
k
+
7
)
x
+
(
k
+
7
)
=
0
equal
(i)
(
(
−
4
)
,
56
)
(ii)
(
(
−
7
)
,
57
)
(iii)
(
(
−
6
)
,
56
)
(iv)
(
(
−
6
)
,
57
)
(v)
(
(
−
4
)
,
55
)
Question
8
8.
Solve :
(
x
(
x
+
5
)
)
2
+
4
(
x
(
x
+
5
)
)
+
3
= 0
(i)
(
-7
2
)
,
(
-17
4
)
(ii)
(
-9
4
)
,
(
-7
2
)
(iii)
(
-3
2
)
,
(
-13
4
)
(iv)
-3
,
(
-9
2
)
(v)
(
-5
2
)
,
(
-15
4
)
Question
9
9.
Solve :
√
(
4
x
−
4
)
=
x
(i)
2
,
2
(ii)
2
√
4
,
2
√
4
(iii)
2
√
5
,
2
√
5
(iv)
2
√
2
,
2
√
2
(v)
2
√
3
,
2
√
3
Question
10
10.
Solve :
√
(
5
x
2
−
30
x
)
=
(
x
+
2
)
(i)
(
17
4
−
1
4
√
610
)
,
(
17
4
+
1
4
√
610
)
(ii)
(
17
4
√
5
−
1
4
√
305
)
,
(
17
4
√
5
+
1
4
√
305
)
(iii)
(
17
4
√
4
−
1
4
√
305
)
,
(
17
4
√
4
+
1
4
√
305
)
(iv)
(
17
4
−
1
4
√
915
)
,
(
17
4
+
1
4
√
915
)
(v)
(
17
4
−
1
4
√
305
)
,
(
17
4
+
1
4
√
305
)
Question
11
11.
Solve :
−
5
(
x
+
3
)
+
5
(
−
x
−
5
)
=
−
5
(i)
(
−
5
√
3
)
,
(
−
3
√
3
)
(ii)
(
−
5
√
2
)
,
(
−
3
√
2
)
(iii)
(
−
5
)
,
(
−
3
)
(iv)
(
−
5
√
4
)
,
(
−
3
√
4
)
(v)
(
−
5
√
5
)
,
(
−
3
√
5
)
Question
12
12.
Solve :
4
(
−
x
+
4
)
+
2
(
−
x
)
=
−
2
(
x
+
5
)
(i)
(
−
15
4
−
1
4
√
1155
)
,
(
−
15
4
+
1
4
√
1155
)
(ii)
(
−
15
4
√
5
−
1
4
√
385
)
,
(
−
15
4
√
5
+
1
4
√
385
)
(iii)
(
−
15
4
−
1
4
√
770
)
,
(
−
15
4
+
1
4
√
770
)
(iv)
(
−
15
4
−
1
4
√
385
)
,
(
−
15
4
+
1
4
√
385
)
(v)
(
−
15
4
√
4
−
1
4
√
385
)
,
(
−
15
4
√
4
+
1
4
√
385
)
Question
13
13.
Solve :
−
7
√
15
x
2
+
34
x
+
7
√
15
=
0
(i)
√
60
(
−
7
)
,
7
√
15
(ii)
√
15
(
−
7
)
,
7
√
60
(iii)
√
60
(
−
7
)
,
7
√
4
√
15
(iv)
√
15
(
−
7
√
4
)
,
7
√
60
(v)
√
15
(
−
7
)
,
7
√
15
Assignment Key
1) (i)
2) (iv)
3) (i)
4) (ii)
5) (ii)
6) (iii)
7) (ii)
8) (v)
9) (i)
10) (v)
11) (iii)
12) (iv)
13) (v)