Show that $\displaystyle 2^k+2^k-1=2^{k+1}-1$

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- Nov 28th 2011, 08:05 PMJskidequation involving addition of powers
Show that $\displaystyle 2^k+2^k-1=2^{k+1}-1$

- Nov 28th 2011, 08:14 PMProve ItRe: equation involving addition of powers
- Nov 28th 2011, 08:18 PMJskidRe: equation involving addition of powers
- Nov 28th 2011, 08:56 PMProve ItRe: equation involving addition of powers