rachel-butler_60956083584cb
rachel-butler_60956083584cb
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y²-6y+9 = 0 A=1 B= - 6 C=9 DELTA= -6 ao quadrado - 4.1.9 DELTA = 36 - 36 DELTA=0 Y=-(-6) +- raiz de 0/2 Y1=6 + 0/2= 3 Y2=6-0/2=3 S=3