1.(5m^3n^2)^2*(-2m^2)^3*(-n^3)^4=?2.(π-3)^0+(-0.125)^2011*8^20113.(2a^m-3b^n)(3a^n+5b^m)

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1.(5m^3n^2)^2*(-2m^2)^3*(-n^3)^4=?2.(π-3)^0+(-0.125)^2011*8^20113.(2a^m-3b^n)(3a^n+5b^m)
1.(5m^3n^2)^2*(-2m^2)^3*(-n^3)^4=?
2.(π-3)^0+(-0.125)^2011*8^2011
3.(2a^m-3b^n)(3a^n+5b^m)

1.(5m^3n^2)^2*(-2m^2)^3*(-n^3)^4=?2.(π-3)^0+(-0.125)^2011*8^20113.(2a^m-3b^n)(3a^n+5b^m)
1.符号有点不明确,希望可以确认一下.
2.原式=1+(-1/8)^2011*8^2011
=1-8^-2011*8^2011
=0
3.原式=6a^mn-9a^n*b^n+10a^m*b^m-15b^mn
消不掉,能再看下题么?