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shteffi
@shteffi
October 2021
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Помогите решить системы уравнений
1) 3х-у=8
(3х+у)(9х квадрат-у квадрат)=128
2) (х-2)(у+1)=0
6у квадрат+х-у=3
3) х(х+у)=15
У(х+у)=10
4) решить неравенство:
х квадрат +1/х квадрат больше 7
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