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 :
(
8
x
+
2
)
(
3
x
+
1
)
=
(
47
x
+
2
)
(
18
x
+
1
)
(i)
(
2
,
-1
)
(ii)
(
-3
,
0
)
(iii)
(
3
,
0
)
(iv)
(
1
,
-3
)
(v)
(
5
,
3
)
Question
2
2.
Solve :
(
x
+
2
)
(
x
−
8
)
+
(
x
−
9
)
(
x
−
6
)
=
71
15
(i)
(
226
41
,
8
)
(ii)
(
218
39
,
10
)
(iii)
(
238
43
,
12
)
(iv)
(
230
41
,
13
)
(v)
(
228
41
,
11
)
Question
3
3.
Solve :
(
x
2
−
x
)
2
−
7
(
x
2
−
x
)
+
12
=
0
(i)
(
3
2
+
1
2
√
17
)
,
(
3
2
−
1
2
√
17
)
,
(
3
2
+
1
2
√
13
)
,
(
3
2
−
1
2
√
13
)
(ii)
(
−
1
2
+
1
2
√
17
)
,
(
−
1
2
−
1
2
√
17
)
,
(
−
1
2
+
1
2
√
13
)
,
(
−
1
2
−
1
2
√
13
)
(iii)
(
1
2
+
1
2
√
17
)
,
(
1
2
−
1
2
√
17
)
,
(
1
2
+
1
2
√
13
)
,
(
1
2
−
1
2
√
13
)
(iv)
(
1
2
+
1
2
4
√
17
)
,
(
1
2
−
1
2
4
√
17
)
,
(
1
2
+
1
2
4
√
13
)
,
(
1
2
−
1
2
4
√
13
)
(v)
(
1
2
+
17
2
)
,
(
1
2
−
17
2
)
,
(
1
2
+
13
2
)
,
(
1
2
−
13
2
)
Question
4
4.
Solve :
(
x
4
−
3
x
2
+
2
)
=
0
(i)
√
2
,
(
−
√
2
)
,
1
,
(
−
1
)
(ii)
√
5
,
(
−
√
4
)
,
3
,
1
(iii)
4
√
2
,
(
−
4
√
2
)
,
2
,
0
(iv)
√
1
2
,
(
−
√
1
2
)
,
(
−
1
)
,
(
−
3
)
(v)
2
,
(
−
2
)
,
0
,
(
−
2
)
Question
5
5.
Solve :
(
x
−
8
)
(
x
−
7
)
(
x
−
6
)
(
x
−
5
)
=
7920
(i)
16
,
(
−
3
)
(ii)
15
,
(
−
4
)
(iii)
17
,
(
−
2
)
(iv)
13
,
(
−
5
)
(v)
18
,
(
−
1
)
Question
6
6.
Solve the quadratic equation
x
−
36
x
=
−
5
(i)
(
7
,
-11
)
(ii)
(
5
,
-10
)
(iii)
(
5
,
-9
)
(iv)
(
4
,
-9
)
(v)
(
7
,
-10
)
Question
7
7.
For what values of
k
are the roots of
(
k
−
10
)
x
2
+
(
k
+
2
)
x
+
(
k
+
2
)
=
0
equal
(i)
(
(
−
1
)
,
14
)
(ii)
(
(
−
1
)
,
13
)
(iii)
(
0
,
13
)
(iv)
(
0
,
12
)
(v)
(
(
−
2
)
,
14
)
Question
8
8.
Solve :
(
x
(
x
+
1
)
)
2
−
3
(
x
(
x
+
1
)
)
−
54
= 0
(i)
(
-11
8
)
,
(
-8
7
)
(ii)
(
-7
6
)
,
(
-6
5
)
(iii)
(
-7
8
)
,
(
-4
7
)
(iv)
(
-9
8
)
,
(
-6
7
)
(v)
(
-11
10
)
,
(
-2
3
)
Question
9
9.
Solve :
√
(
x
+
5
)
=
(
x
−
7
)
(i)
11
√
4
,
4
√
4
(ii)
11
√
5
,
4
√
5
(iii)
11
√
3
,
4
√
3
(iv)
11
√
2
,
4
√
2
(v)
11
,
4
Question
10
10.
Solve :
√
(
3
x
2
+
28
x
+
32
)
=
(
x
+
1
)
(i)
(
−
13
2
√
4
−
1
2
√
107
)
,
(
−
13
2
√
4
+
1
2
√
107
)
(ii)
(
−
13
2
−
1
2
√
214
)
,
(
−
13
2
+
1
2
√
214
)
(iii)
(
−
13
2
−
1
2
√
107
)
,
(
−
13
2
+
1
2
√
107
)
(iv)
(
−
13
2
√
5
−
1
2
√
107
)
,
(
−
13
2
√
5
+
1
2
√
107
)
(v)
(
−
13
2
−
1
2
√
321
)
,
(
−
13
2
+
1
2
√
321
)
Question
11
11.
Solve :
−
4
x
+
4
(
−
x
+
2
)
=
2
(i)
2
√
5
,
(
−
3
)
(ii)
2
,
0
(iii)
2
√
2
,
1
(iv)
2
√
3
,
(
−
1
)
(v)
2
√
4
,
2
Question
12
12.
Solve :
−
4
(
−
x
+
3
)
−
2
(
−
x
−
2
)
=
−
4
(
x
+
4
)
(i)
(
−
11
10
+
1
10
√
562
)
,
(
−
11
10
−
1
10
√
562
)
(ii)
(
−
11
10
√
4
+
1
10
√
281
)
,
(
−
11
10
√
4
−
1
10
√
281
)
(iii)
(
−
11
10
√
5
+
1
10
√
281
)
,
(
−
11
10
√
5
−
1
10
√
281
)
(iv)
(
−
11
10
+
1
10
√
843
)
,
(
−
11
10
−
1
10
√
843
)
(v)
(
−
11
10
+
1
10
√
281
)
,
(
−
11
10
−
1
10
√
281
)
Question
13
13.
Solve :
7
√
13
x
2
+
x
−
2
√
13
=
0
(i)
√
13
7
,
(
−
2
)
√
13
(ii)
√
13
7
√
4
,
(
−
2
)
√
52
(iii)
√
13
7
,
(
−
2
)
√
52
(iv)
√
52
7
,
(
−
2
)
√
13
(v)
√
52
7
,
(
−
2
√
4
)
√
13
Assignment Key
1) (iii)
2) (v)
3) (iii)
4) (i)
5) (i)
6) (iv)
7) (v)
8) (iv)
9) (v)
10) (iii)
11) (ii)
12) (v)
13) (i)