try this out..(adsbygoogle = window.adsbygoogle || []).push({});

expand ( 1 + x/2 - x to the power of 2 ) to the power of n in ascending powers of x until and including the term in x to the power of 3.

the answers given by the book is

1 + nx/2 + n(n-9)/8 x to the power of 2 + n(n-1)(n-26)/48 x to the power of 3 + ...

i just want to know whether the answer is correct or not.

if possible, please show me the working. tq.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Binomial expansion

**Physics Forums | Science Articles, Homework Help, Discussion**