EduSahara™ Assignment
Name : Solving some complex Quadratic Equations - 2
Chapter : Quadratic Equations
Grade : ICSE Grade X
License : Non Commercial Use
Question
1
1.
Solve :
(
x
(
x
+
2
)
)
2
−
11
(
x
(
x
+
2
)
)
+
24
= 0
(i)
(
-12
5
)
,
-4
(ii)
(
-18
7
)
,
-5
(iii)
(
-20
9
)
,
-2
(iv)
-2
,
-1
(v)
(
-16
7
)
,
-3
Question
2
2.
Solve :
√
(
3
x
−
7
)
=
(
x
−
5
)
(i)
(
13
2
√
4
+
1
2
√
41
)
,
(
13
2
√
4
−
1
2
√
41
)
(ii)
(
13
2
+
1
2
√
123
)
,
(
13
2
−
1
2
√
123
)
(iii)
(
13
2
+
1
2
√
41
)
,
(
13
2
−
1
2
√
41
)
(iv)
(
13
2
√
5
+
1
2
√
41
)
,
(
13
2
√
5
−
1
2
√
41
)
(v)
(
13
2
+
1
2
√
82
)
,
(
13
2
−
1
2
√
82
)
Question
3
3.
Solve :
√
(
3
x
2
−
3
x
−
6
)
=
(
x
+
1
)
(i)
(
−
√
3
)
,
7
2
√
3
(ii)
(
−
√
4
)
,
7
2
√
4
(iii)
(
−
1
)
,
7
2
(iv)
(
−
√
5
)
,
7
2
√
5
(v)
(
−
√
2
)
,
7
2
√
2
Question
4
4.
Solve :
−
1
(
−
x
+
3
)
−
2
(
x
−
1
)
=
−
2
(i)
√
2
,
3
√
2
(ii)
√
3
,
3
√
3
(iii)
√
4
,
3
√
4
(iv)
√
5
,
3
√
5
(v)
1
,
3
Question
5
5.
Solve :
5
(
x
−
3
)
−
2
(
−
x
−
4
)
=
5
(
x
+
5
)
(i)
(
−
11
−
2
√
28
)
,
(
−
11
+
2
√
28
)
(ii)
(
−
11
√
4
−
2
√
14
)
,
(
−
11
√
4
+
2
√
14
)
(iii)
(
−
11
−
2
√
42
)
,
(
−
11
+
2
√
42
)
(iv)
(
−
11
√
5
−
2
√
14
)
,
(
−
11
√
5
+
2
√
14
)
(v)
(
−
11
−
2
√
14
)
,
(
−
11
+
2
√
14
)
Question
6
6.
Solve :
−
8
√
13
x
2
−
37
x
−
3
√
13
=
0
(i)
√
13
(
−
8
√
4
)
,
(
−
3
)
√
52
(ii)
√
52
(
−
8
)
,
(
−
3
)
√
13
(iii)
√
52
(
−
8
)
,
(
−
3
√
4
)
√
13
(iv)
√
13
(
−
8
)
,
(
−
3
)
√
13
(v)
√
13
(
−
8
)
,
(
−
3
)
√
52
Question
7
7.
Solve :
32
x
2
−
12
√
2
x
+
2
=
0
(i)
√
2
4
,
√
2
8
(ii)
√
8
4
,
√
8
8
(iii)
√
8
4
,
√
2
8
(iv)
√
2
4
,
√
2
8
√
4
(v)
√
2
4
√
4
,
√
2
8
√
4
Question
8
8.
Solve :
7
x
2
+
11
√
7
x
+
28
=
0
(i)
(
−
4
)
√
7
,
(
−
7
)
√
7
(ii)
(
−
4
√
4
)
√
7
,
(
−
7
)
√
7
(iii)
(
−
4
)
√
7
,
(
−
7
)
√
28
(iv)
(
−
4
)
√
28
,
(
−
7
)
√
28
(v)
(
−
4
√
4
)
√
7
,
(
−
7
√
4
)
√
7
Question
9
9.
Solve :
x
2
−
16
x
+
52
=
0
(i)
(
8
+
√
24
)
,
(
8
−
√
24
)
(ii)
(
8
+
√
36
)
,
(
8
−
√
36
)
(iii)
(
8
√
5
+
√
12
)
,
(
8
√
5
−
√
12
)
(iv)
(
8
√
4
+
√
12
)
,
(
8
√
4
−
√
12
)
(v)
(
8
+
√
12
)
,
(
8
−
√
12
)
Question
10
10.
Find the roots of the quadratic equation correct to two decimal places
(
35
x
2
+
15
x
−
20
)
=
0
(i)
7.57 , 6.00
(ii)
0.57 , -1.00
(iii)
1.57 , 0.00
(iv)
8.57 , 7.00
(v)
2.57 , 1.00
Assignment Key
1) (v)
2) (iii)
3) (iii)
4) (v)
5) (v)
6) (iv)
7) (i)
8) (i)
9) (v)
10) (ii)
