Question

Y^2 = x-1
(x-3)^2 + y^2 =4

Answer 1

Substitusi y² = x - 1 ke persamaan
(x - 3)² + y² = 4
(x - 3)² + x - 1 - 4 = 0
x² - 6x + 9 + x - 5 = 0
x² - 5x + 4 = 0
(x - 1)(x - 4) = 0
utk x = 1 ⇒ y = 0
utk x = 4 ⇒ y = - √3 atau √3