Posted by anoynomous on .
find first three terms in the expansion of ( 1 –x )^1/4

maths 
Reiny,
Use (a+b)^n
= a^n + [n(n1)/1!] a^(n1) (b) + [n(n1)(n2)/2!] a^(n2) b^2 + ..
(1  x)^(1/4)
= 1 +(1/4) (x) + (1/4)(5/4)/2 (x)^2 + ...
= 1 + (1/4)x  (5/32)x^2 + ...
check my algebra