Answer
$3x^2+4y^2-4x-4=0$,
Ellipse.
Work Step by Step
$r(2-cos\theta)=2$,
$2r-r\ cos\theta=2$,
$2r=2+r\ cos\theta$,
$4r^2=(2+r\ cos\theta)^2$,
$4x^2+4y^2=(2+x)^2$,
$3x^2+4y^2-4x-4=0$,
Ellipse.
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