SPLK tentukan himpunan dari, y=2x+3 , y=x2-4x+8

diketahui
y = 2x + 3
y = x² - 4x + 8

jawab
y = x² - 4x + 8
2x + 3 = x² - 4x + 8
x² - 4x + 8 - 2x - 3 = 0
x² - 6x + 5 = 0
(x - 5) (x - 1) = 0
x = 5
x = 1

hp = {1,5}