97^3+83^3/180 - 97*83(97+83)(97^2-97*83+83^2)/180 - 97*83=(180*(97^2-97*83+83^2))/180-97*83= =97^2-2*97*83+83^2=(97-83)^2=14^2=196
см.влож
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97^3+83^3/180 - 97*83
(97+83)(97^2-97*83+83^2)/180 - 97*83=
(180*(97^2-97*83+83^2))/180-97*83=
=97^2-2*97*83+83^2=(97-83)^2=14^2=196
см.влож
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