Question

x ao quadrado -5x+3=0

Answer 1

x² - 5x + 3 = 0
a = 1, b = - 5, c = 3

Δ = b² - 4ac
Δ = (- 5)² - 4 . 1 . 3
Δ = 25 - 12
Δ = 13

x = (- b ± √Δ)/2a
x = (- (- 5) ± √13)/2 . 1
x = (5 ± √13)/2

x' = (5 + √13)/2
x'' = (5 - √13)/2