Question

Exercícios de função quadratica

Y = x² - 4x + 3

Answer 1

Resposta:

Y = x² - 4x + 3

x² - 4x + 3 = 0

∆ = b²-4ac

∆ = (-4)²-4.(1).(3)

∆ = 16-12

∆ = 4

x = -b±√∆/2a

x = -(-4)-2/2.1

x = 4-2/2

x = 2/2

x = 1

x = -(-4)+2/2.1

x = 4+2/2

x = 6/2

x = 3

S = {1, 3}