Odpowiedzi

2009-12-21T23:24:14+01:00
(x-2)²-x(x-3):3<⅔x(x+7)/*3
3(x-2)²-x(x-3)<2x(x+7)
3(x²-4x+4)-(x²-3x)<2x²+14x
3x²-12x+12-x²+3x<2x²+14x
3x²-2x²-x²-12x-14x+3x<-12
-23x<-12/:(-23)
x>12/23
x∈(12/23,∞)
2009-12-22T00:30:35+01:00