a) Fie 4 = (1,5); B = [2,8), C = (5, 12]

Calculati ADB, BOC, CUB, HUC. b) aflati x apartine R daca 3x-1 supra 2 apartine (-11,9)
c) Fie A= {x ap R l 2 mai mic sau egal x+3 supra 5 mai mic sau egal decat 6 } B= { x ap R l 2x-1 ap (3,5)}


urgent dau coroana va rog am test
dau 80 p