January 2019 1 6 Report
1)Oblicz i zaznacz współrzędne.

x² - 3x -4 ≥ 0
x² - 6x + 9 > 0
- 5x² - x + 1 > 0
( x-2 )² + 4 < 8
- x² + x + 6 >0

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