3х²-11х-4>0
3х²-11х-4=0
а=3; b=-11; c=-4
D=b²-4ac=169
x1,2=(11+-13)/6
x1=4; x2= -1/3
+ - +
----------(-1/3)--------4------>x
Ответ: (-беск.; -1/3)U(4;+беск.)
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3х²-11х-4>0
3х²-11х-4=0
а=3; b=-11; c=-4
D=b²-4ac=169
x1,2=(11+-13)/6
x1=4; x2= -1/3
+ - +
----------(-1/3)--------4------>x
Ответ: (-беск.; -1/3)U(4;+беск.)