Question

As raízes da equação -x2+x+6

Answer 1

-x² + x + 6 = 0

Δ = 1² - 4(-1)(6)
Δ = 1 + 24
Δ = 25

$x = \frac{-1~\pm~5}{-2} \\ \\ x' = \frac{-1~+~5}{-2} =-2 \\ \\ x'' = \frac{-1~-5}{-2} =3$


S = {-2; 3}