Question

me dê a resposta de 3 x elevado a 2 - 2x - 1 = 0​

Answer 1

Resposta:

3x/2 - 2x - 1 = 0

3x- 4x - 2 =0

-x - 2 = 0

-x =2 + 0

- x = 2

-x × - 1 = 2

x = 2

Answer 2

3x² - 2x - 1

a= 3

b = -2

c = -1

Δ = b² -4ac

Δ = (-2)² - 4 (3 . -1)

Δ = 4 - 4 (-3)

Δ = 4 + 12

Δ = 16

X = -b± √Δ / 2a

x = -(-2)±√16 / 6

x = 2 ± 4 / 6

x1 = 2 + 4 = 6, 6/6 = 1

x2 = 2 - 4 = -2 / 6 =  \frac{-1}{3}