Verified Answer :

caylus

Hello,
\(x^{2000}*x^{1998}=2^{1999}*x^{1999}\\ ==\textgreater\ x^{2000+1998}=2^{1999}*x^{1999}\\ ==\textgreater\ x^{2000+1998-1999}=2^{1999}\\ ==\textgreater\ x^{1999}=2^{1999}\\ ==\textgreater\ x=2\)