1)х^2-7х+12=0 Ответ должен получиться (7;12) По теореме Виета
2)х^3-х-72=0
3) -х^2+3,5х-3=0
4) -3х^2-8х+80=0
5)5х^2+9х-18=0
Пожалуйста ​
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