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Question 1
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If the circles $ x^2 + y^2 + 2x + 2ky + 6 = 0$ and $x^2 + y^2 + 2ky + k = 0$ intersect orthogonally, then $k$ is:
A.
$2 \text{ or } -\dfrac{3}{2}$
B.
$-2 \text{ or } -\dfrac{3}{2}$
C.
$2 \text{ or } \dfrac{3}{2}$
D.
$-2 \text{ or } \dfrac{3}{2}$
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