Предмет: Алгебра, автор: pashevichoksana

Доказать,что выражение кратно 55; 343 в 3 степени+ 49 в 4 степени-7 в 7 степени

Ответы

Автор ответа: RuTwayeR
3

343^{3}  +  {49}^{4}  -  {7}^{7} \\  ({7}^{3} )^{3}  + ( { {7}^{2} )}^{4}  -  {7}^{7}  \\  {7}^{9}  +  {7}^{8}  -  {7}^{7} \\ 7^{7} (49 + 7 - 1) \\ {7}^{7}  \times 55
Ответ: делится
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Предмет: Математика, автор: COLDI999