№11
x^2-2x-3=4
D=4-4*1*(-3)=4+12=16
x1=2+4/2=3
x2=2-4/2=-1
Ответ:3,-1
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№11
x^2-2x-3=4
D=4-4*1*(-3)=4+12=16
x1=2+4/2=3
x2=2-4/2=-1
Ответ:3,-1