1.计算[过程]:3X^3·（-X)^5-X^5·（-X）^3+X·X^3·X^4
=-3X^8+X^8+X^8
=-X^8
2,.(X-Y)^M·（X-Y）^N+2·（Y-X）^3
=(X-Y)^M+N+2*[-(X-Y)^3]
=-(X-Y)^M+N+5
3,A^M+N=A^M*A^N=10,
∴A^N=10/A^M=10/2=5
4,.(-0.125)^2007·8^2008 =-8*0.125^2007*8^2007
=-8(0.125*8)^2007
=-8
5'.(3又1/5)^8×(5/16)^8
=(16/5*5/16)^8
=1^8
=1