Question

resolva a equação do 2 grau ×^2-3×=0​

Answer 1

Resposta:

x² - 2x - 3 = 0

a = 1

b = -2

c = -3

Delta:

Δ = b² - 4ac

Δ = (-2)² - 4 * 1 * (-3)

Δ = 4 + 12

Δ = 16

Bhaskara:

x = - b ± √Δ / 2a

x = - (-2) ± √16 / 2 * 1

x = 2 ± 4 / 2

x' = 2 - 4 / 2 = -2 / 2 = -1

x'' = 2 + 4 / 2 = 6 / 2 = 3

S = {-1, 3}