Mohon bantuannya kakak kakak yang jenius

Bab Persamaan Kuadrat
Matematika SMA Kelas X

y² - 3y = 6y - 2y²
y² + 2y² - 3y - 6y = 0
3y² - 9y = 0
3y (y - 3) = 0
3y = 0
y = 0
x = y² - 3y
x = 0 - 0 = 0 → (0,0)

y - 3 = 0
y = 3
x = y² - 3y
x = 3² - 3 . 3 = 0 → (0,3)

x1 + y1 + x2 + y2 = 0 + 0 + 0 + 3 = 3

jawabannya A