Ответы на вопрос:
87*43 +(87-43)(87² +87*43 +43²)) /44 =87*43 +(44*(87² +87*43 +43²) /44 =87*43 +87² +87*43 +43² =87² +2*87*43 +43² =(87 +43)² =(87+43)(87+43) =130*130 =16900 (87*43 +87*43 =2*87*43)
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