Question

Resolve a equação do 2 grau
X2-7x+12=0

Answer 1

Olá.

x² - 7x + 12 = 0

Separando coeficientes

a = 1 ; b = -7 ; c = 12

Delta

Δ =b² - 4 a c

Δ = (-7)² - 4 • 1 • 12

Δ = 49 - 48

Δ = 1

Raízes:

x = -b ±√Δ /2 a

x = 7 ± √1 / 2 • 1

x = 7 ± 1/2

x1 = 7+1/2 = 8/2 = 4

x2 = 7-1/2 = 6/2 = 3

S (4,3)