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Question

The equation 2x2+2y2+4x+8y+15=0 represents


A

A pair of straight lines

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B

A circle

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C
An ellipse
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D
None of these
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Solution

The correct option is D None of these
Given equation is 2x2+2y2+4x+8y+15=0

(x+1)2+(y+2)2=52
which is not possible, as left hand term is a non-negative term.


Mathematics

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