Tentukan himpunan penyelesain darui persamaan y=x-1 y=x kuadrat-5x+4

Bab Persamaan Kuadrat
Matematika SMA Kelas X

y = x - 1
y = x² - 5x + 4

y = y
x² - 5x + 4 = x - 1
x² - 5x - x + 4 + 1 = 0
x² - 6x + 5 = 0
(x - 1) (x - 5) = 0
x - 1 = 0
x = 1

x - 5 = 0
x = 5

y = x - 1
y = 1 - 1
y = 0
(1, 0)

y = x - 1
y = 5 - 1
y = 4
(5, 4)

HP = { (1, 0), (5, 4) }