Question

) -x² + 6x - 5=0
(R: 1,5) conta do delta​

Answer 1

- x² + 6x - 5 = 0

x² - 6x + 5 = 0

Delta:

Δ = b² - 4ac

Δ  = 36 - 4.5.1

Δ  = 36 - 20

Δ  = 16

√Δ  = ± 4

Raízes:

x = (- b  ± √Δ)/2a

x = ( 6 ± 4)/2

x' = 10/2 = 5

x'' = 2/2 = 1

Resposta: 1 e 5