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Maths-

General

Easy

Question

The locus of the centres of the circles which cut the circles $x to the power of 2 end exponent plus y to the power of 2 end exponent plus 4 x minus 6 y plus 9 equals 0$ and $x to the power of 2 end exponent plus y to the power of 2 end exponent minus 5 x plus 4 y minus 2 equals 0$ orthogonally is ‐

9x+10y-7=0
x-y+2=0
9x-10y+11=0
9x+10y+7=0

The correct answer is: 9x-10y+11=0

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