EduSahara™ Assignment
Name : Finding Values of Algebraic Expressions
Chapter : Special Products As Identities
Grade : ICSE Grade VII
License : Non Commercial Use
Question
1
1.
If
(
x
+
1
x
)
=
4
,
find the value of
(
x
2
+
1
x
2
)
(i)
13
(ii)
15
(iii)
11
(iv)
17
(v)
14
Question
2
2.
If
(
x
+
1
x
)
=
9
,
find the value of
(
x
4
+
1
x
4
)
(i)
6237
(ii)
6238
(iii)
6240
(iv)
6242
(v)
6239
Question
3
3.
If
(
x
−
1
x
)
=
3
,
find the value of
(
x
2
+
1
x
2
)
(i)
10
(ii)
13
(iii)
9
(iv)
12
(v)
11
Question
4
4.
If
(
x
−
1
x
)
=
5
,
find the value of
(
x
4
+
1
x
4
)
(i)
726
(ii)
725
(iii)
727
(iv)
728
(v)
729
Question
5
5.
If
(
2
x
+
1
2
x
)
=
8
,
find the value of
(
4
x
2
+
1
4
x
2
)
(i)
59
(ii)
64
(iii)
63
(iv)
62
(v)
61
Question
6
6.
If
(
2
x
−
1
3
x
)
=
8
,
find the value of
(
4
x
2
+
1
9
x
2
)
(i)
196
3
(ii)
194
3
(iii)
66
(iv)
326
5
Question
7
7.
If
(
a
+
b
)
=
8
,
a
b
=
12
, find
(
a
2
+
b
2
)
(i)
38
(ii)
43
(iii)
41
(iv)
39
(v)
40
Question
8
8.
If
(
5
a
+
4
b
)
=
42
,
a
b
=
18
, find
(
25
a
2
+
16
b
2
)
(i)
1044
(ii)
1043
(iii)
1045
(iv)
1041
(v)
1046
Question
9
9.
If
(
a
+
b
)
=
8
,
a
b
=
12
, find
(
a
4
+
b
4
)
(i)
1312
(ii)
1313
(iii)
1311
(iv)
1310
(v)
1314
Question
10
10.
If
(
4
a
+
3
b
)
=
36
,
a
b
=
24
, find
(
256
a
4
+
81
b
4
)
(i)
352514
(ii)
352509
(iii)
352511
(iv)
352512
(v)
352513
Assignment Key
1) (v)
2) (v)
3) (v)
4) (iii)
5) (iv)
6) (i)
7) (v)
8) (i)
9) (i)
10) (iv)