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vineri, 15 octombrie 2021

First problem of https://www.facebook.com/Matem%C3%A1tica-preuniversitaria-111349621225123/photos/pcb.135514875475264/135514668808618/

 A solution, out of scheduled training



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Mi Prepa, https://www.facebook.com/photo?fbid=1427344626075511&set=a.575642501245732

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