Question

Resolva
x² - 5x + 6 = 0

Answer 1

x² - 5x + 6 = 0    

a = 1  

b = -5  

c = 6  

Delta:  

Δ = b² - 4ac  

Δ = (-5)² - 4 * 1 *+ 6  

Δ = 25 - 24  

Δ = 1  

   Bhaskara:  

   x = - b ± √Δ / 2a  

   x = - (-5) ± √1 / 2 * 1  

   x = 5 ± 1 / 2  

   x' = 5 + 1 / 2 = 6 / 2 = 3  

   x'' = 5 - 1 / 2 = 4 / 2 = 2  

S = {2, 3}