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mrust
@mrust
August 2022
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Помогите математика 6 класс ! 22 баллов.
Уравнение: (х+1)(х+3)=5
(4+х)-5=1
х+2+3х=14
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Answers & Comments
sevil99
1) x^2+4x+4-5=0
x^2+4x-1=0
D=16-4*1*(-1)=20
х1=(-4+2корень5)/2 х2=(-4-2корень5)/2
2)4+x-5-1=0
x=5+1-4
x=2
3)4x=14-2
4x=12
x=3
1 votes
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Answers & Comments
x^2+4x-1=0
D=16-4*1*(-1)=20
х1=(-4+2корень5)/2 х2=(-4-2корень5)/2
2)4+x-5-1=0
x=5+1-4
x=2
3)4x=14-2
4x=12
x=3