Question

ache o valor do delta e do X

3x2 + 4x – 4 = 0

Answer 1

3x² + 4x - 4 = 0

Δ = b² - 4 . a . c

Δ = (- 4)² - 4 . 3 . - 4

Δ = 16 + 48

Δ = 64

$x = \frac{-b +/- \sqrt{DELTA } }{2 . a}$

x = - 4 ± √64

         2 . 3

x = - 4 ± 8

         6

x' = - 4 - 8

          6

x' =  - 12

         6

x' = - 2

$x'' = \frac{- 4 + 8}{6}$

$x'' = \frac{4}{6}$

x'' = 0, 66

S = { - 2, 0, 66 }