Question

Descriminate Delta
∆ > 0
X²+8x-4-N = 0

Answer 1

Resposta:

${x}^{2} + 8x - 4 - n \\ delta = 64 - 4( - 4 - n) \\ delta = 64 + 16 + n \\ delta = 80 + n$

Como...

∆ > 0 e ∆ = 80 + n

80 + n > 0

n > - 80