Question

$y = - {4x}^{2} - 6x + 2$

Answer 1

y = -4x² - 6x + 2

Iguala y a 0

-4x² - 6x + 2 = 0

Δ = b² - 4.a.c

Δ = -6² - 4 . -4 . 2

Δ = 36 - 4. -4 . 2

Δ = 68

Há 2 raízes reais.

x = (-b +- √Δ)/2a

x' = (--6 + √68)/2.-4

x'' = (--6 - √68)/2.-4

x' = 14,246211251235321 / -8

x'' = -2,246211251235321 / -8

x' = -1,7807764064044151

x'' = 0,28077640640441515