December 2018 1 6 Report
Rozwiąż Nierówności:
-x²-2x+15≤0
-x²+5x+14>0
x²+x+1>0
x²-2x+5<0
9x²-30x+25≤0
-4x²+12x-9≥0
3(2-x)(x+4)≤0
- \frac{1}{2}(x+1)(x-3) ≤0

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