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=
=
=
= √136
= 2√34
maka r = x 2√34 = √34
r² = 34
pusat linkaan = ( ,
= ,
= (- 3 , - 2)
persamaan lingkaran :
(x - a)² + (y - b)² = r²
(x - -3)² + (y - -2)² = 34
(x + 3)² + (y + 2)² = 34 ....atau ....
x² + 6x + 9 + y² + 4y + 4 - 34 = 0
x² + y² + 6x + 4y - 31 = 0