Question

x² + 3x+1=0 me ajudam aa

Answer 1

Resposta:

- 3x + 1 = 0

Δ = b² - 4.a.c

Δ = (-3)² - 4 * 1 * 1

Δ = 9 - 4

Δ = 5

x = -b +-  √Δ

     -------------

          2*a

x = - (-3) +-√5 / 2*1

x = 3 +-√5 / 2

x' = 3 + √5 / 2

x'' = 3 - √5 / 2