Yanıt: $10^{x+y}$ midir?
$2^x=10\rightarrow 2^{xy}=10^y$ ve $3^y=10\rightarrow 3^{xy}=10^x$ buradan $2^{xy}.3^{xy}=10^x.10^y\Rightarrow 6^{xy}=10^{x+y}$ olur.