The degree is 2x. WhY dO aNsWeRs HaVe To Be 20 ChArAcTeRs LoNg?!
[tex]\bf 4xy^2x\implies 4x^1y^2x^1\implies \stackrel{\textit{adding the exponents of the variables}}{1+2+1\implies 4}~\hspace{4em}4^{th}~degree[/tex]