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Question

Two circles have the equations x2+y24x6y8=0 and x2+y22x3=0. Then

A
they cut each other
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B
they touch each other
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C
one circle lies inside the other
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D
one circle lies wholly outside the other
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Solution

The correct option is A they cut each other
C1(2,3) and r1=22+32+8=21
C2(1,0) and r2=12+3=2
C1C2=10 and r1+r2=21+2
Since, C1C2<r1+r2
Therefore, two circles intersect each other
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