1
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
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The axis of the parabola $${x^2} + 2xy + {y^2} - 5x + 5y - 5 = 0$$ is
A
$$x + y = 0$$
B
$$x + y - 1 = 0$$
C
$$x - y + 1 = 0$$
D
$$x - y = {1 \over {\sqrt 2 }}$$
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