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admolchanova
@admolchanova
July 2022
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Найдите множество корней уравнения. Уравнения под буквой (в) и (г)
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niluri02
В) 2y^2-50y=75-3y
2y^2-50y+3y-75=0
2y^2-47y-75=0
D=2209+600=2809=53^2
x1=(47-53)/4=-6/4
x2=(47+53)/4=25
г) 15y^2+6y=5y+2
15y^2+y-2=0
D=1+120=121
x1=(-1-11)30=-2/5
x2=10/30=1/3
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Answers & Comments
2y^2-50y+3y-75=0
2y^2-47y-75=0
D=2209+600=2809=53^2
x1=(47-53)/4=-6/4
x2=(47+53)/4=25
г) 15y^2+6y=5y+2
15y^2+y-2=0
D=1+120=121
x1=(-1-11)30=-2/5
x2=10/30=1/3