Rozwiąż nierówność
2x kwadrat + 4x -1 < 0
(2x + 1 ) ( 6x - 1) < 5x
2x+4x-1<0 2x+4x=-1<0 6x=-1/6 x>1
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2x+4x-1<0 2x+4x=-1<0 6x=-1/6 x>1