Expansion of (a+bx^m)^n

Expand expressions where the variable appears as x^m (m>1) rather than x, such as (1+x²)^n or (8+27x³)^(1/3).

1 questions

CAIE P3 2003 November Q2

2 Expand \(\left( 2 + x ^ { 2 } \right) ^ { - 2 }\) in ascending powers of \(x\), up to and including the term in \(x ^ { 4 }\), simplifying the coefficients.