find the middle term in expansion of (2ax+b^x²)¹²....?
Answers
Answered by
1
Answer:
Correct option is
A
x
6
59136 a
6
b
6
Given that to find middle term in expansion of (20x−
x
2
b
)
12
n=12⇒ even
for even number middle term =(
2
n
+1)th
middle term =(
2
12
+1)th⇒7
We know that T
r+1
=
n
C
r
(a)
n−r
b
r
T
7
=T
6+1
=
12
C
6
(29x)
12−6
(
x
2
−b
)
6
=
6!6!
12!
2
6
a
6
x
6
x
12
b
6
=
6×5×4×3×2×1×6!
12×11×10×9×8×7×6!
2
6
x
6
a
6
b
6
=
x
6
59136a
6
b
6
Answered by
5
Answer:
for answer check out the above image
#devil354boy...✌✌✌
Attachments:
Similar questions