Question

qual a formula de delta x2+2x-8=0

Answer 1

x² + 2x - 8 = 0
Δ = 4 + 32 >>> Δ = 36

Answer 2

Δ = b² + 4.a.c

Δ = 4 + 4 x 1 . (-8)
Δ = 4 + (-32)
Δ = - 28