January 2019 1 48 Report
Titik (a,b) dan r berturut turut adalah pusat dan jari jari lingkaran x^2+y^2+8x-2y-8=0 maka nilai a^2+b^2-(r^2+2ab)

a.18
b.0
c.8
d 18
e.50
berserta penyelesaian

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