（1）2m²-4m+2013
=2(m²-2m)+2013
=2×1+2013
=2+2013
=2015
(2)[2x(x-y)^(m+1)]-[4y(x-y)^m]
=[2(x-y)^m]×[x(x-y)-4y]
=[2(x-y)^m]×(x²-xy-4y)
(3)∵3x(x-4y²)=3x²-12xy²
=3x²-mxy²
∴m=12
那么m的值为（12）