" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Lingkaran.(x - h)² + (y - k)² = r²
(x - 1)² + (y - 2)² = 9
x² - 2x + 1 + y² - 4y + 4 - 9 = 0
x² + y² - 2x - 4y - 4 = 0