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roslavceva12
@roslavceva12
August 2022
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Помогите срочно! Нужно сегодня!
Решите систему неравенств:
x²+4x<1
x²+4x>-1
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KrSpi4ka
X²+4x<1
x²+4x-1<0
D= 16-4*(-1)= 20
x1=-4+√20/2
x2=-4-√20/2
x²+4x>-1
x²+4x+1>0
D=16-4*1= 12
x1= -4+√12/2
x2=-4-√12/2
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Answers & Comments
x²+4x-1<0
D= 16-4*(-1)= 20
x1=-4+√20/2
x2=-4-√20/2
x²+4x>-1
x²+4x+1>0
D=16-4*1= 12
x1= -4+√12/2
x2=-4-√12/2