Em qual dos conjuntos universo a equação x ao quadrado - 2X -3=0 tem duas soluções?
A ) U = { 1,2,3,4,5 }
B) U = { -5,-4,- 3,- 2, -1}
C ) U = { - 3, - 2,0,2,3}
D ) U = { -1,0,1,2,3}
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