hp dari x2-4x+3 dengan rumus abc

x² - 4x + 3 = 0 --> a = 1, b = -4, c=3

x = (-b±√(b² - 4ac))/2a
x = (4±√(16-4×1×3))/2
x = (4±√4)/2 = (4±2)/2

x1 = (4+2)/2 = 6/2 = 3
x2 = (4-2)/2 = 2/2 = 1

HP = {1, 3}