x 2 -------------- + --------------> 0 2 2 x - 6x + 9 x - 9
x 2
-------------- + --------------> 0
2 2
x - 6x + 9 x - 9
1) x --- + 1> 0 2 0,5x+1>0 0,5x>-1 |×2 x>-2 2) x - 6x + 9 x - 9 4x=9 |÷4 x=2¹/₄