How to solve the equation $x^2+Dy^2=\alpha$ over finite fields

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It is known that the equation $x^2+Dy^2=1$ is solved over finite fields $\mathbb{F}_q$ and we can point out the solutions . I wonder can we give solutions for the equation $x^2+Dy^2=\alpha$ for any $\alpha$ in $\mathbb{F}_q$?