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2002141
@2002141
July 2022
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3х^-2х<0 х^+2х-3>0 а)у=8х-х^ б)у=5-4х-х^ помогите....
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12345949
Х^2+2х-35=0
д=4+140=144=12^2
×(1)=(-2+12)/2=5
×(2)=(-2-12)/12=-7
х^2-х-42=0
д=1+168=169=13^2
х(1)=(1+13/2=7
х(2)=(1-13)/2=-6
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Answers & Comments
д=4+140=144=12^2
×(1)=(-2+12)/2=5
×(2)=(-2-12)/12=-7
х^2-х-42=0
д=1+168=169=13^2
х(1)=(1+13/2=7
х(2)=(1-13)/2=-6