Answer
$60x^4y^2$
Work Step by Step
According to the Binomial Theorem we can obtain the $r+1$th term of the expansion of the binomial $(x+y)^n$ by the formula $_nC_rx^{n-r}y^r$.
Hence here it is: (by plugging in $n=6,r=2$ and $x,2y$: $_6C_2(x)^{6-2}(2y)^2=15\cdot x^44y^2=60x^4y^2$