in the expansion of (1+x)¹² which of the following is correct
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Answer:
x
2
+
x
1
)
12
=E
r
th
term is independent of x
So E⇒
12
C
0
(x
2
)
12
+....
12
C
1
(x
2
)
12−1
(
x
1
)
1
+...
12
C
8
(x
2
)
12−8
(
x
1
)
8
+....
12
C
12
(x
2
)
0
(
x
1
)
12
So, 9th term ⇒
12
C
8
(x
2
)
4
(
x
1
)
8
⇒
12
C
8
(1)
∴9
th
term =r
th
term (option A is correct)
=independent of x
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