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donetsckayaali
@donetsckayaali
August 2022
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Решите уравнение:
x2+5x+4=0
x в квадрате
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Answers & Comments
Maple56
D=5^2-4*4=25-16=9
x1=-b+
\ 2= -5+3/2=-1
x2=-b-
\ 2=-5-3/2=-4
7 votes
Thanks 4
iosiffinikov
Х*х+5х+6,25=2,25
(х+2,5)*(х+2,5)=1,5*15
Два решения
1) х+2,5=1,5
х=-1
2) х+2,5=-1,5
х=-4
Отве: Два решения х=-1 или х=-4
6 votes
Thanks 3
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Answers & Comments
x1=-b+\ 2= -5+3/2=-1
x2=-b-\ 2=-5-3/2=-4
(х+2,5)*(х+2,5)=1,5*15
Два решения
1) х+2,5=1,5
х=-1
2) х+2,5=-1,5
х=-4
Отве: Два решения х=-1 или х=-4