April 2021 0 13 Report
Решите систему уравнений методом замены переменной: х\у * ( х + у ) = - 4
х\у + ( х + у ) = - 3
Решите систему уравнений:
х в кв. + 2ху + у в кв. = 25
2х + у = 1
Заранее спасибо.
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