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What is the correct answer?
4
I
f
x
=
3
+
2
2
,
t
h
e
n
t
h
e
v
a
l
u
e
o
f
x
-
1
x
i
s
:
A.
1
B.
2
C.
2
2
D.
3
3
Correct Answer :
B. 2
x
-
1
x
2
=
x
+
1
x
-
2
=
(
3
+
2
2
)
+
1
(
3
+
2
2
)
-
2
=
(
3
+
2
2
)
+
1
(
3
+
2
2
)
×
(
3
-
2
2
)
(
3
-
2
2
)
-
2
=
(
3
+
2
2
)
+
(
3
-
2
2
)
-
2
= 4.
∴
x
-
1
x
=
2
.
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