Question

qual a resolução da conta do 2 grau X-5x+6=0

Answer 1

Luci,

x² - 5x + 6 = 0

a = 1

b = -5

c = 6

Δ = (-5)² - 4.1.6

Δ = 25 - 24

Δ = 1

Δ > 0, logo:

x = -b +- √Δ / 2.a

x = -(-5) +- √1 / 2.1

x = 5 +- 1 / 2

x' = 5+1/2 = 6/2 = 3

x'' = 5-1/2 = 4/2 = 2

S = {3, 2}