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The equation sqrt((x - 2)^2 + y^2) + sqr...

The equation `sqrt((x - 2)^2 + y^2) + sqrt((x+2)^2 + y^2) = 4` represents

A

Circle

B

pair of straight lines

C

parabola

D

Ellipse

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The correct Answer is:
B
NA
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TARGET PUBLICATION-PAIR OF STRAIGHT LINES-COMPETITIVE THINKING
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  19. If the gradient of one of the lines given by x^(2)+hxy+2y^(2)=0 is twi...

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