Question

妍

求解🙏🏻

7.
過P(1,3)對圓x²+y²-4x+2y-4=0作二切線,若切點為A、B,則△PAB之外接圓方
與且(8.1)積飯
程式為
• (x-3)+(y-1)=
,其,中左到衣圓
【解
0147) = (2-1)
r = = √16+4+16
x6
=3
(X.4)
2X-840-5
(x-1) +14-33 = (x-237 14+12
x+2x+1+1=64+9= x²-4x+4 +4 +4 +1
(-) (0.8)歐

Answer 1

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