Wb JeeBinomial TheoremWB JEE 2011MCQ+1 / -0.252011The coefficient of xn om the expansion of \({{{e^{7x}} + {e^x}} \over {{e^{3x}}}}\) isA\({{{4^{n - 1}} - {{( - 2)}^{n - 1}}} \over {\left| \!{\underline {\, n \,}} \right. }}\)B\({{{4^{n - 1}} - {2^{n - 1}}} \over {\left| \!{\underline {\, n \,}} \right. }}\)C\({{{4^n} - {2^n}} \over {\left| \!{\underline {\, n \,}} \right. }}\)D\({{{4^n} + {{( - 2)}^n}} \over {\left| \!{\underline {\, n \,}} \right. }}\)Check AnswerClear SelectionReveal AnswerShow Explanation
