Question

Calcule as equação do segundo grau X2-2X+8=0

Answer 1

Formula Delta

Δ = b² - 4.a.c

X² - 2x + 8 = 0

a = 1

b = -2

c = 8

Δ = b² - 4.a.c

Δ = (-2)² - 4 . 1 . 8

Δ = 4 - 32

Δ = -28