Question 2 - A-Level Maths

Exam Board	CAIE
Module	P3 (Pure Mathematics 3)
Year	2022
Session	June
Topic	Generalised Binomial Theorem
Type	Expand and state validity

Expand \(\left( 2 - x ^ { 2 } \right) ^ { - 2 }\) in ascending powers of \(x\), up to and including the term in \(x ^ { 4 }\), simplifying the coefficients.
State the set of values of \(x\) for which the expansion is valid.