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Complex number 1!

Algebra Level 5

If \(x = 2+5i\) and \(\large 2(\frac{1}{1!9!} +\frac{1}{3!7!}) + \frac{1}{5!5!} = \frac{2^a}{b!} \) , then the value of \((x^3 -5x^2 +33x -19)\) is equal to

\[a\] \[a-b\] None of These \[b\] \[a+b\]

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by Nishant Rai

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