December 2021 0 9 Report
Решить систему уравнений: №1
у - 2х = 9
х^2 + 2у = 14

№2
4х - у + 1 = 0
х^2 + ху + у^2 = 13

№3
х^2 - у^2 = -24
х - у = 2
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