Question

x^2-6x+8=0 ??????????

Answer 1

Δ = b² - 4ac
Δ = (-6)² - 4.1.8
Δ = 36 - 32
Δ = 4

x1 = - 4 + √4 / 2×1
x1= - 2/ 2
x1 = -1

x2 = - 4 - √4 / 2×1
x2= - 6/ 2
x2 = 3