Tolong bantu jawab ya: Tentukan pusat dan jari-jari lingkaran: a)2x^2+2y^2+16x-4y-38=0 b)x^2+y^2-8x-8y-4=0 c)-3x^2-3y^2-24x+12y-60=0 d)x^2+y^2+8x-my+16=0, di mana m=0 tolong bantu jawab ya, terima kasih...
felindapromaxs
Ini udah langsung jwaban ya a. x^2+y^2+8x-2y-19=0 p= -1/2A, -1/2B = -1/2.8, -1/2.-2 =-4, 1 r= akar 1/4(a)^2+1/4(b)^2-c =akar 1/4(8)^2+1/4(4)^2+19 =akar 1/4(64)+1/4(4)+19 =akar 16+1+19 =akar 36 =6
a. x^2+y^2+8x-2y-19=0
p= -1/2A, -1/2B
= -1/2.8, -1/2.-2
=-4, 1
r= akar 1/4(a)^2+1/4(b)^2-c
=akar 1/4(8)^2+1/4(4)^2+19
=akar 1/4(64)+1/4(4)+19
=akar 16+1+19
=akar 36
=6
dri b-d cara kerjanya sama...
anda pasti paham:)