jika x+y=2per3 dan xy = 1per9 temukan hasil dari -45(x²+y²)

x + y = 2/3
xy = 1/9

-45(x² + y²)
= -45((x + y)² - 2xy)
= -45 ((2/3)² - 2(1/9))
= -45 (4/9 - 2/9)
= -45(2/9)
= -5(2)
= -10

mohon maaf kalo salah