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lenavolkova
@lenavolkova
August 2022
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решите 2 уравнения 3(3х-18)-х (3х-18)=0 y(6y-42)-9(6y-42)=0
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Sirotkinartiom
1) раскрываем скобки
3х*2-54-3х*2+18х=0
18х=54
х=3
2)6у*2-96у+378=0
Все сокращаем на шесть
у*2-16у+63=0 ищем дискриминант
D=256-252=4
y1=9. y2=7
0 votes
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Answers & Comments
3х*2-54-3х*2+18х=0
18х=54
х=3
2)6у*2-96у+378=0
Все сокращаем на шесть
у*2-16у+63=0 ищем дискриминант
D=256-252=4
y1=9. y2=7