Specified power condition from general term for JEE

Formula

\[\text{If }T_{r+1}\text{ contains }x^{k},\text{ then equate the exponent of }x\text{ in }T_{r+1}\text{ to }k.\]

Variables: \(k\) is the required exponent.

Finding a term independent of \(x\), coefficient of \(x^k\), or term containing \(x^k\).