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Question

The length of chord of circle x2+y2+6x+9y+8=0 intercepted by x axis is

A
1
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B
3
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C
4
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D
2
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Solution

The correct option is D 2
x2+y2+6x+9y+8=0
x intercept is given by putting y=0,
x2+6x+8=0(x+4)(x+2)=0x=2 ; x=4
Lenght of the chord =|2(4)|=2

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