(1)2m^3-32m
原式=2m(m^2-16)
=2m(m+4)(m-4)
(2)a^2(x-y)+b^2(y-x)
原式=a^2(x-y)-b^2(x-y)
=(x-y)(a^2-b^2)
=(x-y)(a+b)(a-b)
好了~