Ответ:
(b^2-ab)/ab^2=(b^2-2)/2b=
=b(b-a)/2b=(b-a)/2=-(b+a/2)=-(-12)/2=6
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Ответ:
(b^2-ab)/ab^2=(b^2-2)/2b=
=b(b-a)/2b=(b-a)/2=-(b+a/2)=-(-12)/2=6