In the binomial expression of 2/x-3)^10, find the7th term
Answers
Answered by
7
Answer:
(2x
2
−
2x
3
)
8
There are 9 terms in the expansion so, 7th term from back is 3
rd
term from first
=
8
C
2
(2x
2
)
6
(
2x
−3
)
2
=
6!2!
8!
2
6
x
12
4x
2
9
=
4
28×2
6
×9×x
10
=63×2
6
×x
10
=63×2
6
x
10
Hence, the answer is 63×2
6
x
10
.
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