A.x2+y2=2 | B.x2+y2=
| C.x2+y2=1 | D.x2+y2=4 |
1 |
2 |
1 |
2 |
(1+1)2+(-1-1)2 |
2 |
x2 |
169 |
y2 |
144 |
x2 |
9 |
y2 |
16 |
A.x2+y2-10x+9=0 | B.x2+y2-10x-9=0 |
C.x2+y2+10x+9=0 | D.x2+y2+10x-9=0 |
4-x2 |
A.(x-3)2+(y+1)2=4 | B.(x+3)2+(y-1)2=4 |
C.(x-1)2+(y-1)2=4 | D.(x+1)2+(y+1)2=4 |
A.(-2,-1) | B.(2,1) | C.(2,-1) | D.(1,-2) |
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