1)х^2+8х+15=0
2)х^2+9х+14=0
3)х^2+4х-21=0
4)х^2+4х-5=0
решите уравнения по теореме Виета
2)х^2+9х+14=0
3)х^2+4х-21=0
4)х^2+4х-5=0
решите уравнения по теореме Виета
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Answers & Comments
2)х1=-7,х2=-2
3)х1=-7, х2=3
4)х1=-5,х2=1