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Daje 30 pkt!!! bardzo pilne prosze o rozwiazanie x2 chodzi o kwadrat , 2x2 to dwa do kwadratu

Rozwiąż nierówność:
a) x2+8x+15>0 b) –x2-6>0 c) x2-10x+25≤0
d) x2-x-2<0 e) 5x2+1<0 f) –x2+6x-9≥0
g) x2-8x<-7 h) 2x2+3>0

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