Question

Relsouva a equaçao do 2 grau 6×2+×-1=0

Answer 1

∆=1² -4.6.(-1)= 1 +24 = 25 => √∆=5
x= -b±√∆/2a

x= -1±5/2.6

x' = -1+5/12 = 4/12 = 1/3 ✓

x" = -1-5/12 = -6/12 = -1/2 ✓

Answer 2

Olá

Temos : 6x² + x - 1 = 0

Separando os coeficientes:

A = 6 ; B = 1 ; C = - 1

Delta:

Δ = b² - 4 • a • c

Δ = 1² - 4 • 6 • (-1)

Δ = 1 + 24

Δ = 25

Raízes

X = - b ± √ Δ / 2 • a

X = - 1 ± √25 / 2 • 6

X = - 1 ± 5/12

X1 = - 1 + 5/12 = -4÷2/12÷2 / 2÷2/6÷2 = 1/3

X2 = - 1-5/12 = -6÷6 / 12÷6 = - 1/2

Temos a solução: S (1/3 , -1/2 )