Resposta :

MATHSPHIS
[tex]S=\frac{-b}{a}=\frac{3p}{4} \\ \\ P=\frac{c}{a}=\frac{p-4}{4} \\ \\ \frac{3p}{4}=\frac{p-4}{4} \\ \\ 3p=p-4 \\ \\ 2p=-4 \\ \\ p=-2[/tex]

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