Determine the discriminant Δ\DeltaΔ of x3+px+qx^3 + px + qx3+px+q.
−4p3−27q2-4p^3 - 27q^2−4p3−27q2
4p3+27q24p^3 + 27q^24p3+27q2
p2−4qp^2 - 4qp2−4q
p3−q2p^3 - q^2p3−q2