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Dims11
@Dims11
July 2022
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Срочно! Решить систему уравнений!
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Kixcertborn2
Verified answer
Х + у = 3
Х^2 - у^2 = 15
Решение
Х = 3 - у
Х^2 = 9 - 6у + у^2
9 - 6у + у^2 - у^2 = 15
6у = 9 - 15
у = - 6 : 6
у = - 1
Х = 3 + 1
Х = 4
Ответ ( 4 ; - 1 )
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Answers & Comments
Verified answer
Х + у = 3Х^2 - у^2 = 15
Решение
Х = 3 - у
Х^2 = 9 - 6у + у^2
9 - 6у + у^2 - у^2 = 15
6у = 9 - 15
у = - 6 : 6
у = - 1
Х = 3 + 1
Х = 4
Ответ ( 4 ; - 1 )