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valeriaraimova
@valeriaraimova
July 2022
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Помогите, я забыла как делать:
х + 2х^2 + 1 = 5
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Лучше для удобства написать так:
Теперь перенесем 5 в лево:
Найдем дискриминант:
Находим корни:
1 votes
Thanks 1
лаура788
X+2x^2+1-5=0
X+2x^2-4=0
2x^2+x-4=0
A=2
B=1
C=-4
D=b^2-4ac
D=1+32=33
X1=-1+33/4=32/4=8
X2=-1-33/4=34/4=8,5
1 votes
Thanks 1
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Answers & Comments
Verified answer
Лучше для удобства написать так:
Теперь перенесем 5 в лево:
Найдем дискриминант:
Находим корни:
X+2x^2-4=0
2x^2+x-4=0
A=2
B=1
C=-4
D=b^2-4ac
D=1+32=33
X1=-1+33/4=32/4=8
X2=-1-33/4=34/4=8,5