Question

find the middle term expansion (2x-x^2/4)^10
​

Answer 1

Answer:

Given expression (1−2x+x

2

)

n

⇒ (1−2x+x

2

)

n

=[(1−x)

2

]

n

=(1−x)

2n

Middle term (

2

2n

+1)

th

⇒(n+1)

th

term

T

n+1

=

2n

C

1

(1)

2n−n

(−x)

n

=

(n!)

2

2n!

(1)

n

(−x)

n

Middle term is

(n!)

2

(2n!)

(−1)

n

x

n