a^2=m,b^2=n,求（ab）^12

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a^2=m,b^2=n,求（ab）^12a^2=m,b^2=n,求（ab）^12a^2=m,b^2=n,求（ab）^12a^2=m,b^2=n,a^2*b^2=mn(ab)^2=mn求（ab）^12=

a^2=m,b^2=n,求（ab）^12
a^2=m,b^2=n,求（ab）^12

a^2=m,b^2=n,求（ab）^12
a^2=m,b^2=n,
a^2*b^2=mn
(ab)^2=mn
求（ab）^12
=[(ab）^2]^6
=(mn)^6
=m^6n^6