Resposta :
px²-2(p-1)x+3=0
p(-1/3)^2 -2p(-1/3) +2(-1/3) + 3 = 0
p + 2p - 2 + 3 = 0 mmc = 9
9 3 3
p +6p - 6 + 27 = 0
7p = - 21
p = - 3
p(-1/3)^2 -2p(-1/3) +2(-1/3) + 3 = 0
p + 2p - 2 + 3 = 0 mmc = 9
9 3 3
p +6p - 6 + 27 = 0
7p = - 21
p = - 3