Ответ:
3)= 1
6)=(5/4)^-2=(4/5)^2=16/25
9)=(-5/2)^-3=(-2/5)^3=-8/125
12)=-(-7/3)^-2=-(-3/7)^2=-9/49
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Ответ:
3)= 1
6)=(5/4)^-2=(4/5)^2=16/25
9)=(-5/2)^-3=(-2/5)^3=-8/125
12)=-(-7/3)^-2=-(-3/7)^2=-9/49