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Oledmr
@Oledmr
August 2022
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Решить систему уравнений: {х-у=14} {х²-у²=84}
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selmash21
Х=14+у
(14+у)^2-у^2=84
196+28у+у^2-у^2=84
28у+196=84
28у=84-196
28у=-112
у=-112÷28
у=-4
х=14+у=14-4=10
(10;-4)
3 votes
Thanks 4
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Answers & Comments
(14+у)^2-у^2=84
196+28у+у^2-у^2=84
28у+196=84
28у=84-196
28у=-112
у=-112÷28
у=-4
х=14+у=14-4=10
(10;-4)