Question

Responda

d) x² + 6x + 5 = 0​

Answer 1

Resposta:

x^2 - 6x + 5 = 0

Δ = b^2 - 4.a.c  

Δ = -6^2 - 4 . 1 . 5  

Δ = 36 - 4. 1 . 5  

Δ = 16

Há 2 raízes reais.

x = (-b +- √Δ)/2a

x' = (--6 + √16)/2.1    

x'' = (--6 - √16)/2.1

x' = 10 / 2    

x'' = 2 / 2

x' = 5    

x'' = 1

passo-a-passo: