August 2021 0 7 Report
Помогите, найдите значение выражения с двумя переменными: для 7 кл: ЗА ПРАВИЛЬНОСТЬ ДАЮ 50 БАЛЛОВ: 1) n²-3nk+2k² при n= -4, k= -7 ; 2) 2a+5b/4a-2b при a=3/7, b=2/7
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