Question

Tolong jawabin donkkkkkkk nomor 15 ama 17 aja please helppp

Answer 1

15)
y = x² - 4x - 8 memotong sumbu y, jika x = 0
y = 0² - 4(0) - 8
y = -8
titik potong (x,y) = (0, -8)

17)
x² - 4x  + 3= 0
a= 1, b = -4, c = 3
D = b² - 4ac
D = (-4)² - 4(1)(3) = 16 - 12
D = 4