Odpowiedzi

2009-04-15T15:46:21+02:00
X+2/4 + (x+1)(x-1) < (x+2)² - 4x-1/3
x + 1/2 + x² - 1 < x²+4x+4 -4x -1/3
x< 4-1/3-1/2+1
x<2 1/6
2009-04-15T15:49:56+02:00
X+2/4+x²-1< x²+4x+4-4x-1/3
x+2/4+x²-1< x²+4-1/3
x+1/2-1< 3 2/3
x<3 2/3+1/2
x<3 3/6 + 3/6
x<3 7/6
x<4 1/6