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Lena00002
@Lena00002
July 2022
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Спасите6 я тупой((( (у+5)(3у-6)=0
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Answers & Comments
Crafter08
(у+5)(3у-6)=0
3у
²-6у+15у-30=0
3у
²+9у-30=0
Д=в
²-4ас=81-4*3*(-30)=81+360=441 > 0
у1=-9+21/6=2
у2=-9-21/6=-5
Ответ - у1 = 2, у2 = -5
Фуууух это все
Ставь лучшее :D
1 votes
Thanks 1
Lena00002
спасибо!
Lesben
(y+5)(3y-6)=0
(a.b=0⇔a=0 ∨ b=0)
1)y+5=0, y=-5
2)3y-6=0, 3y=6, y=2
Otvet: y=-5, y=2
1 votes
Thanks 1
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Answers & Comments
3у²-6у+15у-30=0
3у²+9у-30=0
Д=в²-4ас=81-4*3*(-30)=81+360=441 > 0
у1=-9+21/6=2
у2=-9-21/6=-5
Ответ - у1 = 2, у2 = -5
Фуууух это все
Ставь лучшее :D
(a.b=0⇔a=0 ∨ b=0)
1)y+5=0, y=-5
2)3y-6=0, 3y=6, y=2
Otvet: y=-5, y=2