Ответ:
2391,2
Объяснение:
14а(14а+14)–(14а–14)(14+14а)=(14а+14)(14а–(14а–14))=
=(14а+14)(14а–14а+14)=(14а+14)×14=196а+196=196(а+1)=
=196(11,2+1)=196×12,2=2391,2
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Ответ:
2391,2
Объяснение:
14а(14а+14)–(14а–14)(14+14а)=(14а+14)(14а–(14а–14))=
=(14а+14)(14а–14а+14)=(14а+14)×14=196а+196=196(а+1)=
=196(11,2+1)=196×12,2=2391,2