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KsenijaVolk84
@KsenijaVolk84
August 2022
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Решите пожалуйста уравнение
2+3x(x+1)=8
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MrLyanda
2+3x(x+1)=8
2+3x^2+3x=8
3x^2+3x-6=0
делим на 3
X^2+x-2=0
D=1+8=9
X1=(-1+3)/2=1
X2=(-1-3)/2=-2
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Answers & Comments
2+3x^2+3x=8
3x^2+3x-6=0
делим на 3
X^2+x-2=0
D=1+8=9
X1=(-1+3)/2=1
X2=(-1-3)/2=-2