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Q.

The equation 2x2+3y28x18y+35=K represents

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a

an ellipse if K < 0

b

a hyperbola if K > 0

c

an ellipse if K > 0

d

a point if K = 0

answer is A, C.

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Detailed Solution

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2(x2)2+3(y3)2=k
If k = 0, then it represents a point 
 If k>0 then it is an ellipse
 

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