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dianadiana248
@dianadiana248
July 2022
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найти дискриминант х^2+x-12=0
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Позитивчик999
Д=1^2-4x(-12) x-умнож.
Д=1+48=49
1 votes
Thanks 1
Позитивчик999
ФОРМУЛА D = b² - 4ac
isakhanyanmile
Х^2+х-12=0
D=(b^2-4ac-формула) (а=х^2; b=x; c=-12)
D=1-4*1*(-12)=1+48=49=7^2
-b+-корень из D/2a-формула
Х1=-1+7/2*1=3
Х2=-1-7/2*1=-4
3 votes
Thanks 5
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Answers & Comments
Д=1+48=49
D=(b^2-4ac-формула) (а=х^2; b=x; c=-12)
D=1-4*1*(-12)=1+48=49=7^2
-b+-корень из D/2a-формула
Х1=-1+7/2*1=3
Х2=-1-7/2*1=-4