• July 2nd 2012, 05:47 AM
GrigOrig99
Just a quick question. Is it correct to say that $2^k+2^k=2^(^k^+^1^)$?

Many thanks.
• July 2nd 2012, 05:53 AM
emakarov
Yes. $2^k+2^k=2^k(1 + 1) = 2^k\cdot 2=2^{k+1}$.