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(x-2)²- 4 + 4(y-1)² -4 - 92 = 0
(x - 2)² + 4(y - 1)² - 100 = 0....................semuanya dibagi 100
(x -2)²/ 100 + (y -1)²/ 25 = 1
a) pusat (2, 1)
sumbu mayor 10 dan sumbu minor 5
c =√ (100 - 25) = √75 = 5√3
b) fokus (2 - 5√3, 1) dan (2+5√3, 1)
c) puncak (2+10, 1) (2-10, 1) (2, 1+5) (2, 1-5)
(12, 1) (-8,1) (2,6) (2, -4)