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martsegelniuk2
@martsegelniuk2
July 2022
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помогите пожалуйста решить систему уравнений
х=5-у
у^2+4ху=33
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гюйс
Verified answer
Х=5-у
у²+4ху=33
х=5-у
у²+4у(5-у)-33=0
у²+20у-4у²-33=0
-3у²+20у -33=0
3у²-20у+33=0
D/4=10² - 3*33=1
у1=(10-1)/3=3
у2=(10+1)/3=3 2/3
у1=3 у2=3 2/3
х1=5-3 х2=5 - 3 2/3
у1=3 у2=3 2/3
х1=2 х2=1 1/3
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Answers & Comments
Verified answer
Х=5-уу²+4ху=33
х=5-у
у²+4у(5-у)-33=0
у²+20у-4у²-33=0
-3у²+20у -33=0
3у²-20у+33=0
D/4=10² - 3*33=1
у1=(10-1)/3=3
у2=(10+1)/3=3 2/3
у1=3 у2=3 2/3
х1=5-3 х2=5 - 3 2/3
у1=3 у2=3 2/3
х1=2 х2=1 1/3